So I have a chat UI that is a box where messages go, and at the bottom of the box of messages is a text input element. It works fine at the beginning, but once enough messages appear then the text input element scrolls up, along with the messages, and will not stay positioned at the bottom. How can I do this? Any useful thoughts would be appreciated.
<html>
<body>
<div id="chatui">
<div id="chatmsgs"></div>
<input type="text" id="chatbox">
</div>
</body>
</html>
Here is my CSS:
#chatui {
z-index:3;
position:absolute;
bottom:5px;
width: 380px;
height: 150px;
border: 3px solid #8AC007;
margin-left:5px;
overflow:auto;
}
#chatbox {bottom:3px;position:absolute;width:378px;}
#chatmsgs {position:absolute;}
Here is my Javascript:
This just says when you press "Enter" on your keyboard to display the text you typed into the "chatmsgs" div.
$(window).keydown(function(e){
if (e.keyCode == 13) {
if (document.activeElement.id == 'chatbox') {
var msg = document.getElementById('chatbox').value;
document.getElementById('chatbox').value = '';
var ms = '<p>'+msg+'</p>';
$('#chatmsgs').append(ms);
}
}
});
Check out this fiddle to see what I am talking about:
https://jsfiddle.net/ev3uymw6/
You have to add overflow:auto and appropriate height to the chatmsgs div, so that it doesn't grow beyond the size of chatui and make it scroll alltogether.
$(window).keydown(function(e) {
if (e.keyCode == 13) {
if (document.activeElement.id == 'chatbox') {
var msg = document.getElementById('chatbox').value;
document.getElementById('chatbox').value = '';
var ms = '<p>' + msg + '</p>';
$('#chatmsgs').append(ms);
}
}
});
#chatui {
z-index: 3;
position: absolute;
bottom: 5px;
width: 380px;
height: 150px;
border: 3px solid #8AC007;
margin-left: 5px;
}
#chatbox {
bottom: 3px;
position: absolute;
width: 378px;
}
#chatmsgs {
position: absolute;
height: 130px;
overflow: auto;
width: 378px
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<body>
<div id="chatui">
<div id="chatmsgs">
</div>
<input type="text" id="chatbox">
</div>
</body>
Related
I have a search bar which would like to display onto the header on scroll, a great example is like the one on this site: https://www.indiamart.com/
Approach 1 - A simple way to do this would be to detect a scroll & add and remove a class that contains display: none;
You can have an event listener -
window.addEventListener('scroll', function() {
if( window.scrollY !== 0) {
document.getElementById('searchBar').classList.add('scrolled');
} else {
document.getElementById('searchBar').classList.remove('scrolled');
}
});
With the CSS -
.noScroll
{
background: yellow;
position:fixed;
height: 50px; /*Whatever you want*/
width: 100%; /*Whatever you want*/
top:0;
left:0;
display:none;
}
/*Use this class when you want your content to be shown after some scroll*/
.scrolled
{
display: block !important;
}
.parent {
/* something to ensure that the parent container is scrollable */
height: 200vh;
}
And the html would be -
<div class="parent">
<div class ='noScroll' id='searchBar'>Content you want to show on scroll</div>
</div>
Here's a JSFiddle of the same - https://jsfiddle.net/kecnrh3g/
Approach 2 -
Another simple approach would be
<script>
let prevScrollpos = window.pageYOffset;
window.onscroll = function() {
let currentScrollPos = window.pageYOffset;
if (prevScrollpos > currentScrollPos) {
document.getElementById('searchBar').style.top = '-50px';
} else {
document.getElementById('searchBar').style.top = '0';
}
prevScrollpos = currentScrollPos;
}
</script>
with the html -
<div class="parent">
<div id ='searchBar'>Content you want to show on scroll</div>
</div>
and css
#searchBar {
background: yellow;
position: fixed;
top: 0;
left: 0;
height: 50px;
width: 100%;
display: block;
transition: top 0.3s;
}
.parent {
height: 200vh;
}
Here's a JSFiddle of the same - https://jsfiddle.net/0tkedcns/1/
From the same example, the idea is only to show/hide once user scroll the page using inline css display property, you can do the same or at least provide a code sample so we can help you!
HTML
<div class="search-bar">
<div class="sticky-search">
Sticky Search: <input type="text" value="search" />
</div>
</div>
CSS
.sticky-search {
display:none;
position:fixed;
top:0px;
left:0px;
right:0px;
background:blue;
padding:10px;
}
JS
var searchHeight = $(".search-bar").outerHeight();
var offset = $(".search-bar").offset().top;
var totalHeight = searchHeight + offset;
console.log(totalHeight);
$(window).scroll(function(){
if($(document).scrollTop() >= totalHeight) {
$('.sticky-search').show();
} else {
$('.sticky-search').hide();
}
});
I need to show my paragraph inside my <div> when click on the <div>. This is my code:
const area = document.getElementById("area");
const popup = document.getElementById("popup");
function showPopup(event) {
let x = event.clientX;
let y = event.clientY;
popup.style.left = `${x}px`;
popup.style.top = `${y}px`;
popup.style.visibility = "visible";
}
area.addEventListener("mousedown", showPopup);
.area {
border: 1px solid;
position: absolute;
height: 200px;
width: 200px;
}
.popup {
visibility: hidden;
position: absolute;
display: inline-block;
}
<div id="area" class="area">
<p class="popup" id="popup">popup</p>
</div>
Note that this is inside another main body <div> (also with position: absolute).
Try this
<div id="area">
<div class="area""
<p class="popup" id="popup">popup</p>
</div>
</div>
I tested your code and observed you are changing style.top property based on your ClientX value which is causing popup element to appear over random position. Use following updated code and it's should be good.
function showPopup(event) {
console.log(event.clientX, event.clientY)
let x = event.clientX;
let y = event.clientY;
popup.style.left = `${x - 8}px`;
popup.style.top = `${y - 8}px`;
popup.style.visibility = "visible";
}
and few CSS changes as -
.area {
border: 1px solid;
position: relative;
height: 200px;
width: 200px;
}
.popup {
visibility: hidden;
position: absolute;
display: inline-block;
margin: 0;
}
For more close positioning of popup element.
I want to add negative padding in css, I have written a small code of battery charging cell. What I want is if I enter value in negative like -1px than the cell color should move to the left side and div should stay in center.
.cell {
width: 100px;
height: 30px;
border: 1px solid black;
}
.padding {
background-color: #3D9970;
width: 10px;
float: left;
height: 30px;
position: absolute;
left: 55px;
padding-right: 1px;
}
<div class="cell">
<div class="cell1"></div>
<div class="padding"></div><span style="display: inline;">
</div>
Please help me.
You can't.
See the specification:
Unlike margin properties, values for padding values cannot be negative.
I think you can achieve the same effect with pseudo elements:
.cell{
display:block;
width: 100px;
height: 30px;
position:relative;
}
.cell:before{
content:'';
background-color: #3D9970;
width: 10px;
top:0;
left:calc(50% - 5px);
height: 100%;
position: absolute;
}
.cell:after{
content:'';
border: 1px solid black;
width:100%;
height:100%;
display:block;
top:0;
left: 0px;
position: absolute;
}
<div class="cell">
</div>
"Left" property could be negative, so if you change it you can move the position of the green rectangle in the middle (.cell:before) of the block and border itself (.after)
The easiest way is to use an absolute positioning relatively to a parent node. Here the parent node would be the battery "housing".
So you can set the position CSS value of the rot div to relative, and then the charge one to absolute. Indeed, according to MDN Webdocs:
absolute: [...] It is positioned relative to its closest positioned ancestor, if any.
Then, you just have to play with the left and width CSS properties. For the "middle" case, I chose to display one border.
Below a working snippet. Just click the "Begin the charge variation" button to start the show.
var chargeElement = document.getElementById("charge");
// To set a charge to the battery, simply call: setCharge(percentage)
function setCharge(percentage) {
var left;
var width;
if (percentage > 100) percentage = 100;
if (percentage < 0) percentage = 0;
chargeElement.setAttribute("data-value", percentage);
// If the charge is 50%, simply draw a line
if (percentage == 50) {
chargeElement.className = "middle";
} else {
chargeElement.className = "";
}
// Otherwise, adjust left and width values
if (percentage >= 50) {
left = 50;
width = percentage - left;
} else {
left = percentage;
width = 50 - left;
}
// Then update the charge style.
chargeElement.style.left = left + "%";
chargeElement.style.width = width + "%";
}
// A simple function to add / remove some charge
function addCharge(percentage) {
var value = parseInt(chargeElement.getAttribute("data-value"));
value += percentage;
setCharge(value);
}
// Here just some stuff for illustration.
// You don't need those functions to set the charge.
function letsBeginTheShow(buttonElement) {
buttonElement.disabled = true;
setNextCharge(10);
}
function setNextCharge(increment) {
var percentage = parseInt(chargeElement.getAttribute("data-value"))
percentage += increment;
if (percentage > 100) {
percentage = 100;
increment = -5;
}
if (percentage < 0) {
percentage = 0;
increment = 5;
}
setCharge(percentage);
setTimeout(function() {
setNextCharge(increment);
}, 50);
}
setCharge(50);
.battery {
position: relative;
width: 100px;
height: 30px;
border: 1px solid black;
/* Below : only for aestethic reasons */
float: left;
margin-right: 30px;
/* End of aesthethic stuff */
}
#charge {
height: 100%;
position: absolute;
background-color: #3D9970;
border-color: #3D9970;
}
.middle {
border-left: 1px solid;
}
<div class="battery">
<div id="charge" data-value="50" class="middle"></div>
</div>
<button onclick="letsBeginTheShow(this)">Begin the charge variation</button>
I have a few controls that I am attempting to encapsulate on my webpage. I have tried a few different methods on encapsulating my controls and they have not succeeded. I tried using a div and this did not work too well and I have also tried this post:
Create a group box around certain controls on a web form using CSS
What is happening is that a box is being created but it is at the top of my webpage instead of around the controls.
I would like to create a grey box similar to the ones found on this webpage:
https://img.labnol.org/di/trigger1.png
Below, I am attaching a copy of the CSS and HTML code that I am using in order to create my form. The form is a simple file upload form that I tweaked from an example. I am using this on my own, personal website.
Here is the HTML:
<!DOCTYPE html>
<html>
<head>
<script>
/* Script written by Adam Khoury # DevelopPHP.com */
/* Video Tutorial: http://www.youtube.com/watch?v=EraNFJiY0Eg */
function _(el){
return document.getElementById(el);
}
function uploadFile(){
var file = _("file1").files[0];
// alert(file.name+" | "+file.size+" | "+file.type);
var formdata = new FormData();
formdata.append("file1", file);
var ajax = new XMLHttpRequest();
ajax.upload.addEventListener("progress", progressHandler, false);
ajax.addEventListener("load", completeHandler, false);
ajax.addEventListener("error", errorHandler, false);
ajax.addEventListener("abort", abortHandler, false);
ajax.open("POST", "file_upload_parser.php");
ajax.send(formdata);
}
function progressHandler(event){
//_("loaded_n_total").innerHTML = "Uploaded "+event.loaded+" bytes of "+event.total;
var percent = (event.loaded / event.total) * 100;
_("progressBar").value = Math.round(percent);
_("status").innerHTML = Math.round(percent)+"% uploaded... please wait";
}
function completeHandler(event){
_("status").innerHTML = event.target.responseText;
_("progressBar").value = 0;
document.getElementById('p1').innerHTML = "Drag your file here or click in this area.";
}
function errorHandler(event){
_("status").innerHTML = "Upload Failed";
}
function abortHandler(event){
_("status").innerHTML = "Upload Aborted";
}
function changeText()
{
document.getElementById('p1').innerHTML = "1 file selected";
}
</script>
<link rel="stylesheet" href="test.css">
</head>
<body>
<h2>Upload</h2>
<fieldset>
<legend>Group 1</legend>
<form id="upload_form" enctype="multipart/form-data" method="post">
<input type="file" name="file1" id="file1"><br>
<p id="p1">Drag your file here or click in this area.</p>
<input type="button" value="Upload File" onclick="uploadFile()">
<progress id="progressBar" value="0" max="100" style="width:508px; margin-left: -4px; margin-top: 10px;"></progress>
<h3 id="status"></h3>
<p id="loaded_n_total"></p>
</form>
</fieldset>
<script>
// self executing function here
(function() {
document.getElementById('upload_form')[0].onchange = changeText;
})();
</script>
</body>
</html>
Here is the CSS (which is referred to in the html as test.css):
body{
background: rgba(0,0,0,0.0);
}
form{
position: absolute;
top: 50%;
left: 50%;
margin-top: -100px;
margin-left: -250px;
width: 500px;
height: 200px;
border: 4px dashed #0D0D0D;
}
form p{
width: 100%;
height: 100%;
text-align: center;
line-height: 140px;
color: #0D0D0D;
font-family: Arial;
}
h2{
text-align: center;
}
form input[type="file"]{
position: absolute;
margin: 0;
padding: 0;
width: 100%;
height: 100%;
outline: none;
opacity: 0;
}
form input[type="button"]{
margin: 0;
color: #fff;
background: #16a085;
border: none;
width: 508px;
height: 35px;
margin-top: -20px;
margin-left: -4px;
border-radius: 4px;
border-bottom: 4px solid #117A60;
transition: all .2s ease;
outline: none;
}
form input[type="button"]:hover{
background: #149174;
color: #0C5645;
}
form input[type="button"]:active{
border:0;
}
form progressBar{
text-align: center;
}
Coming back to the HTML, the fieldset tags are placed around the controls that I am attempting to encapsulate. I left them there so that anyone can see the main issue that I am running into.
I apologize but I am very new to web programming. Any help will be greatly appreciated, thank you.
Note: how the box is created doesn't really matter to me. I would expect that the box is created in HTML and then I can style it using CSS.
The structure of your HTML is fine, but the position: absolute properties in your CSS are clashing with the fieldset.
Since <fieldset> is wrapping all your controls, I would suggeset giving it a fixed width and height and position your child elements based on that, i.e. use width: 100% for your children and give all of them the same margin so they align nicely. Also make sure you either edit your #progressBar style in the markup.
Here's a snippet with the changes I just mentioned:
body {
background: rgba(0, 0, 0, 0.0);
}
fieldset {
width: 508px;
height: 270px;
/* fixed width and height*/
margin: 13vh auto;
}
#p1 {
border: 4px dashed #0D0D0D;
/* modified the actual text box instead of the entire form */
width: 508px;
height: 140px;
line-height: 140px;
margin-top: 0px;
}
form p {
text-align: center;
color: #0D0D0D;
font-family: Arial;
}
h2 {
text-align: center;
}
form input[type="file"] {
position: absolute;
margin: 0;
outline: none;
width: 508px;
height: 140px;
margin: 22px 4px;
opacity: 1;
background-color: orange;
/* Last two properties are a visual representation. Delete background-color and set opacity to 0 */
}
form input[type="button"] {
margin: 0;
color: #fff;
background: #16a085;
border: none;
width: 100%;
/* width relative to parent fieldset */
height: 35px;
margin-top: -20px;
border-radius: 4px;
border-bottom: 4px solid #117A60;
transition: all .2s ease;
outline: none;
}
form input[type="button"]:hover {
background: #149174;
color: #0C5645;
}
form input[type="button"]:active {
border: 0;
}
form progressBar {
text-align: center;
}
<!DOCTYPE html>
<html>
<head>
<script>
/* Script written by Adam Khoury # DevelopPHP.com */
/* Video Tutorial: http://www.youtube.com/watch?v=EraNFJiY0Eg */
function _(el) {
return document.getElementById(el);
}
function uploadFile() {
var file = _("file1").files[0];
// alert(file.name+" | "+file.size+" | "+file.type);
var formdata = new FormData();
formdata.append("file1", file);
var ajax = new XMLHttpRequest();
ajax.upload.addEventListener("progress", progressHandler, false);
ajax.addEventListener("load", completeHandler, false);
ajax.addEventListener("error", errorHandler, false);
ajax.addEventListener("abort", abortHandler, false);
ajax.open("POST", "file_upload_parser.php");
ajax.send(formdata);
}
function progressHandler(event) {
//_("loaded_n_total").innerHTML = "Uploaded "+event.loaded+" bytes of "+event.total;
var percent = (event.loaded / event.total) * 100;
_("progressBar").value = Math.round(percent);
_("status").innerHTML = Math.round(percent) + "% uploaded... please wait";
}
function completeHandler(event) {
_("status").innerHTML = event.target.responseText;
_("progressBar").value = 0;
document.getElementById('p1').innerHTML = "Drag your file here or click in this area.";
}
function errorHandler(event) {
_("status").innerHTML = "Upload Failed";
}
function abortHandler(event) {
_("status").innerHTML = "Upload Aborted";
}
function changeText() {
document.getElementById('p1').innerHTML = "1 file selected";
}
</script>
<link rel="stylesheet" href="test.css">
</head>
<body>
<h2>Upload</h2>
<fieldset>
<legend>Group 1</legend>
<form id="upload_form" enctype="multipart/form-data" method="post">
<input type="file" name="file1" id="file1"><br>
<p id="p1">Drag your file here or click in this area.</p>
<input type="button" value="Upload File" onclick="uploadFile()">
<!-- changed progressBar style -->
<progress id="progressBar" value="0" max="100" style="width:100%; margin-top: 10px;"></progress>
<h3 id="status"></h3>
<p id="loaded_n_total"></p>
</form>
</fieldset>
<script>
// self executing function here
(function() {
document.getElementById('upload_form')[0].onchange = changeText;
})();
</script>
</body>
</html>
Hope it helps!
I have an iframe in my HTML document and I'm having a bit of trouble.
I also have a URL bar (fixed position element) at the top of the page that should stay with the user as they scroll. That works fine. I'd like the iframe to fill the remaining space but not be covered up by the URL bar.
This is what I'm talking about. http://s75582.gridserver.com/Ls
How can I fix this so that the URL bar doesn't cover up part of the page? When I try setting padding in the body, it just creates an extra, annoying scroll bar.
Whilst you can't say ‘height: 100% minus some pixels’ in CSS, you can make the iframe 100% high, then push its top down using padding. Then you can take advantage of the CSS3 box-sizing property to make the padding get subtracted from the height.
This:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html><head>
<title>test</title>
<style type="text/css">
html, body { margin: 0; padding: 0; height: 100%; }
#bar { height: 32px; background: red; }
iframe {
position: absolute;
top: 0; left: 0; width: 100%; height: 100%;
border: none; padding-top: 32px;
box-sizing: border-box; -moz-box-sizing: border-box; -webkit-box-sizing: border-box;
}
</style>
</head><body>
<iframe src="http://www.google.com/"></iframe>
<div id="bar">foo</div>
<body></html>
Works on IE8, Moz, Op, Saf, Chrome. You'd have to carry on using a JavaScript fallback to make the extra scrollbar disappear for browsers that don't support box-sizing though (in particular IE up to 7).
It can be done without any Javascript, works in IE7
CSS:
body {
overflow-y: hidden;
}
#imagepgframe {
width: 100%;
height: 100%;
position: absolute;
}
#wrap {
width: 100%;
position: absolute;
top: 100px;
left: 0;
bottom: 0;
}
HTML:
<div id="wrap">
<iframe id="imagepgframe" frameBorder="0" src="http://en.wikipedia.org/wiki/Internet_Explorer_7"></iframe>
</div>
To build on top of bobince's answer:
Erik Arvidsson came up with a way to (kinda, sorta) add box-sizing support to IE6/IE7. However, his solution doesn't support units other than px. Like you, I needed a percentage height, so I added support for percents.
Once you've downloaded and unzipped the zip file, open boxsizing.htc and replace the following border/padding functions:
/* border width getters */
function getBorderWidth(el, sSide) {
if (el.currentStyle["border" + sSide + "Style"] == "none")
return 0;
var n = parseInt(el.currentStyle["border" + sSide + "Width"]);
return n || 0;
}
function getBorderLeftWidth() { return getBorderWidth((arguments.length > 0 ? arguments[0] : element), "Left"); }
function getBorderRightWidth() { return getBorderWidth((arguments.length > 0 ? arguments[0] : element), "Right"); }
function getBorderTopWidth() { return getBorderWidth((arguments.length > 0 ? arguments[0] : element), "Top"); }
function getBorderBottomWidth() { return getBorderWidth((arguments.length > 0 ? arguments[0] : element), "Bottom"); }
/* end border width getters */
/* padding getters */
function getPadding(el, sSide) {
var n = parseInt(el.currentStyle["padding" + sSide]);
return n || 0;
}
function getPaddingLeft() { return getPadding((arguments.length > 0 ? arguments[0] : element), "Left"); }
function getPaddingRight() { return getPadding((arguments.length > 0 ? arguments[0] : element), "Right"); }
function getPaddingTop() { return getPadding((arguments.length > 0 ? arguments[0] : element), "Top"); }
function getPaddingBottom() { return getPadding((arguments.length > 0 ? arguments[0] : element), "Bottom"); }
/* end padding getters */
Then replace updateBorderBoxWidth and updateBorderBoxHeight with the following:
function updateBorderBoxWidth() {
element.runtimeStyle.width = "";
if (getDocumentBoxSizing() == getBoxSizing())
return;
var csw = element.currentStyle.width;
var w = null;
if (csw != "auto" && csw.indexOf("px") != -1) {
w = parseInt(csw);
} else if (csw != "auto" && csw.indexOf("%") != -1) {
var origDisplay = element.runtimeStyle.display;
element.runtimeStyle.display = "none";
w = Math.max(0, (parseInt(element.parentNode.clientWidth) - (
getBorderLeftWidth(element.parentNode)
+ getPaddingLeft(element.parentNode)
+ getPaddingRight(element.parentNode)
+ getBorderRightWidth(element.parentNode)
)) * (parseInt(csw) / 100));
element.runtimeStyle.display = origDisplay;
}
if (w !== null) {
if (getBoxSizing() == "border-box") {
setBorderBoxWidth(w);
} else {
setContentBoxWidth(w);
}
}
}
function updateBorderBoxHeight() {
element.runtimeStyle.height = "";
if (getDocumentBoxSizing() == getBoxSizing())
return;
var csh = element.currentStyle.height;
var h = null;
if (csh != "auto" && csh.indexOf("px") != -1) {
h = parseInt(csh);
} else if (csh != "auto" && csh.indexOf("%") != -1) {
var origDisplay = element.runtimeStyle.display;
element.runtimeStyle.display = "none";
h = Math.max(0, (parseInt(element.parentNode.clientHeight) - (
getBorderTopWidth(element.parentNode)
+ getPaddingTop(element.parentNode)
+ getPaddingBottom(element.parentNode)
+ getBorderBottomWidth(element.parentNode)
)) * (parseInt(csh) / 100));
element.runtimeStyle.display = origDisplay;
}
if (h !== null) {
if (getBoxSizing() == "border-box") {
setBorderBoxHeight(h);
} else {
setContentBoxHeight(h);
}
}
}
Then just use the file as you would otherwise:
.border-box {
behavior: url("boxsizing.htc");
box-sizing: border-box;
-moz-box-sizing: border-box;
-webkit-box-sizing: border-box;
}
Here's a pretty thorough test I put together while developing my modifications:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<title>box-sizing: border-box;</title>
<style type="text/css">
html, body {
margin: 0;
padding: 0;
width: 100%;
height: 100%;
background: yellow;
}
body {
padding-top: 50px;
padding-bottom: 50px;
}
p {
margin: 0;
}
#header, #footer {
height: 50px;
position: absolute;
width: 100%;
overflow: hidden;
}
#header {
background: red;
top: 0;
}
#footer {
background: blue;
bottom: 0;
}
#content {
width: 100%;
height: 100%;
border: none;
margin: 0;
padding: 0;
background: black;
color: white;
overflow: auto;
position: relative;
padding-top: 40px;
padding-bottom: 40px;
}
#nested-header, #nested-footer {
position: absolute;
height: 40px;
width: 100%;
background: #CCC;
}
#nested-header {
top: 0;
}
#nested-footer {
bottom: 0;
}
#nested-content-wrap {
height: 100%;
}
#nested-floater {
height: 100%;
float: left;
width: 100px;
}
#nested-content {
height: 100%;
background: green;
color: black;
overflow: auto;
position: relative;
}
#inner-nest {
height: 100%;
position: relative;
}
#inner-head {
height: 30px;
width: 100%;
background: #AAA;
position: absolute;
top: 0;
}
#inner-content {
padding-top: 30px;
height: 100%;
overflow: auto;
}
.border-box {
behavior: url("boxsizing.htc");
box-sizing: border-box;
-moz-box-sizing: border-box;
-webkit-box-sizing: border-box;
}
.content-box {
behavior: url("boxsizing.htc");
box-sizing: content-box;
-moz-box-sizing: content-box;
-webkit-box-sizing: content-box;
}
legend {
color: black;
}
form {
margin: 1em 0;
}
.wrap {
height: 100px;
background: #000;
overflow: hidden;
}
.test {
width: 100px;
height: 100%;
background: #AAA;
border-color: #EEE;
padding-left: 20px;
padding-top: 20px;
padding-bottom: 5px;
float: left;
}
.fill {
width: 100%;
height: 100%;
background: #CCC;
}
.gauge {
width: 99px;
background: white;
border-right: 1px solid green;
height: 100%;
float: left;
}
.notes {
background: #8FC561;
}
.clear {
clear: both;
}
/* 120px x 120px square; this will create a black 20px frame on the inside */
.boxtest-wrapper {
width: 100px;
height: 100px;
float: left;
background: black;
color: white;
margin: 1em;
padding: 20px;
}
#boxtest-4-container {
width: 100%;
height: 100%;
}
.boxtest {
width: 100%;
height: 100%;
background: white;
color: black;
border: 5px solid green;
overflow: hidden;
}
</style>
<script type="text/javascript">
function addBorderBox() {
var wrap1 = document.getElementById("wrap-1");
var wrap2 = document.getElementById("wrap-2");
var borderBox = document.createElement("div");
borderBox.className = "test border-box";
var borderBoxFill = document.createElement("div");
borderBoxFill.className = "fill";
var borderBoxContent = document.createTextNode("Generated border box fill");
borderBoxFill.appendChild(borderBoxContent);
borderBox.appendChild(borderBoxFill);
var gauge = document.createElement("div");
gauge.className = "gauge";
var gaugeText1 = "width: 100px";
var gaugeText2 = "height: 100%";
var gaugeText3 = "bottom should be visible";
gauge.appendChild(document.createTextNode(gaugeText1));
gauge.appendChild(document.createElement("br"));
gauge.appendChild(document.createTextNode(gaugeText2));
gauge.appendChild(document.createElement("br"));
gauge.appendChild(document.createTextNode(gaugeText3));
wrap1.appendChild(borderBox);
wrap2.appendChild(gauge);
}
</script>
</head>
<body id="body" class="border-box">
<div id="header">
<p>Header - 50px;</p>
</div>
<div id="content" class="border-box">
<div id="nested-header">
<p>Nested Header - 40px;</p>
</div>
<div id="nested-content-wrap">
<div id="nested-floater">
<p>Float - 100px;</p>
<ul>
<li>This element should never scroll.</li>
</ul>
</div>
<div id="nested-content">
<div id="inner-nest">
<div id="inner-head">
<p>Inner Head - 30px;</p>
</div>
<div id="inner-content" class="border-box">
<div style="float: right; ">
<p>The fourth square should look just like the other three:</p>
<div id="boxtest-wrapper-1" class="boxtest-wrapper">
<div id="boxtest-1" class="boxtest border-box"></div>
</div>
<div id="boxtest-wrapper-2" class="boxtest-wrapper">
<div id="boxtest-2" class="boxtest border-box"></div>
</div>
<br class="clear" />
<div id="boxtest-wrapper-3" class="boxtest-wrapper">
<div id="boxtest-3" class="boxtest border-box"></div>
</div>
<div id="boxtest-wrapper-4" class="boxtest-wrapper">
<div id="boxtest-4-container">
<!-- boxtest-4-container isn't special in any way. it just has width and height set to 100%. -->
<div id="boxtest-4" class="boxtest border-box"></div>
</div>
</div>
</div>
<p>Inner Content - fluid</p>
<ul>
<li>The top of the scrollbar should be covered by the “Inner Head” element.</li>
<li>The bottom of the scrollbar should be visible without having to scroll “Inner Head” out of view.</li>
</ul>
<p>Document Compat Mode:
<strong id="compatMode">
<script type="text/javascript">
var compatMode = document.compatMode;
if (compatMode != "CSS1Compat") {
document.getElementById("compatMode").style.color = "red";
}
document.write(compatMode);
</script>
</strong>
</p><br />
<div class="notes">
<h2>Notes</h2>
<ul>
<li>In IE6 and IE7 (and possibly IE8; untested), you'll notice a slight shift of contents that have <code>box-sizing</code> set to <code>border-box</code>. This is the amount of time it takes for box-sizing.htc to finish downloading.</li>
<li>This workaround is not live. Anything that causes a reflow or repaint will not currently trigger an update to widths and heights of <code>border-box</code> elements.</li>
<li>See http://webfx.eae.net/dhtml/boxsizing/boxsizing.html for the original solution to the IE6/IE7 <code>border-box</code> problem. box-sizing.htc has been modified to allow for percentage widths and heights.</li>
<li>To see what this example should look like without the use of box-sizing.htc, view it in Firefox or IE8.</li>
</ul>
</div>
<br class="clear" />
<form>
<fieldset>
<legend>DOM Update Test</legend>
<input type="button" value="Click to add border-box" onclick="addBorderBox(); " />
</fieldset>
</form>
<div id="wrap-1" class="wrap">
<div class="test content-box" id="content-box-1" style="border-width: 5px; border-style: solid;">
<div class="fill">Content box fill</div>
</div>
<div class="test content-box" id="content-box-2" style="border-width: 5px; border-style: solid; padding: 5px;">
<div class="fill">Content box fill</div>
</div>
<div class="test border-box" id="border-box-1" style="border-width: 5px; border-style: solid;">
<div class="fill">Border box fill</div>
</div>
<div class="test border-box" id="border-box-2" style="border-width: 5px; border-style: solid; padding: 5px;">
<div class="fill">Border box fill</div>
</div>
<div class="test" id="default-box-1" style="border-width: 5px; border-style: solid;">
<div class="fill">Default box fill</div>
</div>
<div class="test" id="default-box-2" style="border-width: 5px; border-style: solid; padding: 5px;">
<div class="fill">Default box fill</div>
</div>
</div>
<div id="wrap-2" class="wrap">
<!-- subtract 1 from width for 1px right border -->
<div class="gauge" style="width: 129px;">width: 130px<br />height: 100%<br />bottom should be cut off</div>
<div class="gauge" style="width: 119px;">width: 120px<br />height: 100%<br />bottom should be cut off</div>
<div class="gauge">width: 100px<br />height: 100%<br />bottom should be visible</div>
<div class="gauge">width: 100px<br />height: 100%<br />bottom should be visible</div>
<div class="gauge" style="width: 129px;">width: 130px<br />height: 100%<br />bottom should be cut off</div>
<div class="gauge" style="width: 119px;">width: 120px<br />height: 100%<br />bottom should be cut off</div>
</div>
<br class="clear" />
<script type="text/javascript">
var lipsum = "<p>Lorem ipsum dolor sit amet.</p>";
for (var i = 0; i < 100; i++) {
document.write(lipsum);
}
</script>
</div>
</div>
</div>
</div>
<div id="nested-footer">
<p>Nested Footer - 40px;</p>
</div>
</div>
<div id="footer">
<p>Footer - 50px;</p>
</div>
</body>
</html>
If by covering up part of the page, you mean the page displayed in the iframe, one thought might be to add a top margin to your iframe, using the margin-top: property in CSS. This would eliminate the scroll bar given that you properly constrained the height of the iframe.
Android Kotlin Answer
For example, I am using padding for iFrame of WebView in this way:
val url = "www.stackoverflow.com"
val iframeExample = "<html><body style=\"margin: 0; padding: 0\"><iframe width=\"100%\" src=\"$url\" frameborder=\"0\" allowfullscreen></iframe></body></html>"
webView.loadData(iframeExample, "text/html", "utf-8")