I have a folder named "images" in the same directory as my .js file. I want to load all the images from "images" folder into my html page using Jquery/Javascript.
Since, names of images are not some successive integers, how am I supposed to load these images?
Works both localhost and on live server without issues, and allows you to extend the delimited list of allowed file-extensions:
var folder = "images/";
$.ajax({
url : folder,
success: function (data) {
$(data).find("a").attr("href", function (i, val) {
if( val.match(/\.(jpe?g|png|gif)$/) ) {
$("body").append( "<img src='"+ folder + val +"'>" );
}
});
}
});
NOTICE
Apache server has Option Indexes turned on by default - if you use another server like i.e. Express for Node you could use this NPM package for the above to work: https://github.com/expressjs/serve-index
If the files you want to get listed are in /images than inside your server.js you could add something like:
const express = require('express');
const app = express();
const path = require('path');
// Allow assets directory listings
const serveIndex = require('serve-index');
app.use('/images', serveIndex(path.join(__dirname, '/images')));
Use :
var dir = "Src/themes/base/images/";
var fileextension = ".png";
$.ajax({
//This will retrieve the contents of the folder if the folder is configured as 'browsable'
url: dir,
success: function (data) {
//List all .png file names in the page
$(data).find("a:contains(" + fileextension + ")").each(function () {
var filename = this.href.replace(window.location.host, "").replace("http://", "");
$("body").append("<img src='" + dir + filename + "'>");
});
}
});
If you have other extensions, you can make it an array and then go through that one by one using in_array().
P.s : The above source code is not tested.
This is the way to add more file extentions, in the example given by Roy M J in the top of this page.
var fileextension = [".png", ".jpg"];
$(data).find("a:contains(" + (fileextension[0]) + "), a:contains(" + (fileextension[1]) + ")").each(function () { // here comes the rest of the function made by Roy M J
In this example I have added more contains.
If interested in doing this without jQuery - here's a pure JS variant (from here) of the answer currently most upvoted:
var xhr = new XMLHttpRequest();
xhr.open("GET", "/img", true);
xhr.responseType = 'document';
xhr.onload = () => {
if (xhr.status === 200) {
var elements = xhr.response.getElementsByTagName("a");
for (x of elements) {
if ( x.href.match(/\.(jpe?g|png|gif)$/) ) {
let img = document.createElement("img");
img.src = x.href;
document.body.appendChild(img);
}
};
}
else {
alert('Request failed. Returned status of ' + xhr.status);
}
}
xhr.send()
Here is one way to do it. Involves doing a little PHP as well.
The PHP part:
$filenameArray = [];
$handle = opendir(dirname(realpath(__FILE__)).'/images/');
while($file = readdir($handle)){
if($file !== '.' && $file !== '..'){
array_push($filenameArray, "images/$file");
}
}
echo json_encode($filenameArray);
The jQuery part:
$.ajax({
url: "getImages.php",
dataType: "json",
success: function (data) {
$.each(data, function(i,filename) {
$('#imageDiv').prepend('<img src="'+ filename +'"><br>');
});
}
});
So basically you do a PHP file to return you the list of image filenames as JSON, grab that JSON using an ajax call, and prepend/append them to the html. You would probably want to filter the files u grab from the folder.
Had some help on the php part from 1
$(document).ready(function(){
var dir = "test/"; // folder location
var fileextension = ".jpg"; // image format
var i = "1";
$(function imageloop(){
$("<img />").attr('src', dir + i + fileextension ).appendTo(".testing");
if (i==13){
alert('loaded');
}
else{
i++;
imageloop();
};
});
});
For this script, I have named my image files in a folder as 1.jpg, 2.jpg, 3.jpg, ... to 13.jpg.
You can change directory and file names as you wish.
Based on the answer of Roko C. Buljan, I have created this method which gets images from a folder and its subfolders . This might need some error handling but works fine for a simple folder structure.
var findImages = function(){
var parentDir = "./Resource/materials/";
var fileCrowler = function(data){
var titlestr = $(data).filter('title').text();
// "Directory listing for /Resource/materials/xxx"
var thisDirectory = titlestr.slice(titlestr.indexOf('/'), titlestr.length)
//List all image file names in the page
$(data).find("a").attr("href", function (i, filename) {
if( filename.match(/\.(jpe?g|png|gif)$/) ) {
var fileNameWOExtension = filename.slice(0, filename.lastIndexOf('.'))
var img_html = "<img src='{0}' id='{1}' alt='{2}' width='75' height='75' hspace='2' vspace='2' onclick='onImageSelection(this);'>".format(thisDirectory + filename, fileNameWOExtension, fileNameWOExtension);
$("#image_pane").append(img_html);
}
else{
$.ajax({
url: thisDirectory + filename,
success: fileCrowler
});
}
});}
$.ajax({
url: parentDir,
success: fileCrowler
});
}
This is the code that works for me, what I want is to list the images directly on my page so that you just have to put the directory where you can find the images for example -> dir = "images /"
I do a substring var pathName = filename.substring (filename.lastIndexOf ('/') + 1);
with which I make sure to just bring the name of the files listed and at the end I link my URL to publish it in the body
$ ("body"). append ($ ("<img src =" + dir + pathName + "> </ img>"));
<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<title></title>
<script src="jquery-1.6.3.min.js"></script>
<script>
var dir = "imagenes/";
var fileextension = ".jpg";
$.ajax({
//This will retrieve the contents of the folder if the folder is configured as 'browsable'
url: dir,
success: function (data) {
//Lsit all png file names in the page
$(data).find("a:contains(" + fileextension + ")").each(function () {
var filename = this.href.replace(window.location.pathname, "").replace("http://", "");
var pathName = filename.substring(filename.lastIndexOf('/') + 1);
$("body").append($("<img src=" + dir + pathName + "></img>"));
console.log(dir+pathName);
});
}
});
</script>
</head>
<body>
<img src="1_1.jpg">
</body>
</html>
If, as in my case, you would like to load the images from a local folder on your own machine, then there is a simple way to do it with a very short Windows batch file. This uses the ability to send the output of any command to a file using > (to overwrite a file) and >> (to append to a file).
Potentially, you could output a list of filenames to a plain text file like this:
dir /B > filenames.txt
However, reading in a text file requires more faffing around, so I output a javascript file instead, which can then be loaded in your to create a global variable with all the filenames in it.
echo var g_FOLDER_CONTENTS = mlString(function() { /*! > folder_contents.js
dir /B images >> folder_contents.js
echo */}); >> folder_contents.js
The reason for the weird function with comment inside notation is to get around the limitation on multi-line strings in Javascript. The output of the dir command cannot be formatted to write a correct string, so I found a workaround here.
function mlString(f) {
return f.toString().
replace(/^[^\/]+\/\*!?/, '').
replace(/\*\/[^\/]+$/, '');
}
Add this in your main code before the generated javascript file is run, and then you will have a global variable called g_FOLDER_CONTENTS, which is a string containing the output from the dir command. This can then be tokenized and you'll have a list of filenames, with which you can do what you like.
var filenames = g_FOLDER_CONTENTS.match(/\S+/g);
Here's an example of it all put together: image_loader.zip
In the example, run.bat generates the Javascript file and opens index.html, so you needn't open index.html yourself.
NOTE: .bat is an executable type in Windows, so open them in a text editor before running if you are downloading from some random internet link like this one.
If you are running Linux or OSX, you can probably do something similar to the batch file and produce a correctly formatted javascript string without any of the mlString faff.
You can't do this automatically. Your JS can't see the files in the same directory as it.
Easiest is probably to give a list of those image names to your JavaScript.
Otherwise, you might be able to fetch a directory listing from the web server using JS and parse it to get the list of images.
In jQuery you can use Ajax to call a server-side script. The server-side script will find all the files in the folder and return them to your html file where you will need to process the returned information.
You can use the fs.readdir or fs.readdirSync methods to get the file names in the directory.
The difference between the two methods, is that the first one is asynchronous, so you have to provide a callback function that will be executed when the read process ends.
The second is synchronous, it will returns the file name array, but it will stop any further execution of your code until the read process ends.
After that you simply have to iterate through the names and using append function, add them to their appropriate locations. To check out how it works see HTML DOM and JS reference
Add the following script:
<script type="text/javascript">
function mlString(f) {
return f.toString().
replace(/^[^\/]+\/\*!?/, '');
replace(/\*\/[^\/]+$/, '');
}
function run_onload() {
console.log("Sample text for console");
var filenames = g_FOLDER_CONTENTS.match(/\S+/g);
var fragment = document.createDocumentFragment();
for (var i = 0; i < filenames.length; ++i) {
var extension = filenames[i].substring(filenames[i].length-3);
if (extension == "png" || extension == "jpg") {
var iDiv = document.createElement('div');
iDiv.id = 'images';
iDiv.className = 'item';
document.getElementById("image_div").appendChild(iDiv);
iDiv.appendChild(fragment);
var image = document.createElement("img");
image.className = "fancybox";
image.src = "images/" + filenames[i];
fragment.appendChild(image);
}
}
document.getElementById("images").appendChild(fragment);
}
</script>
then create a js file with the following:
var g_FOLDER_CONTENTS = mlString(function() { /*!
1.png
2.png
3.png
*/});
Using Chrome, searching for the images files in links (as proposed previously) didn't work as it is generating something like:
(...) i18nTemplate.process(document, loadTimeData);
</script>
<script>start("current directory...")</script>
<script>addRow("..","..",1,"170 B","10/2/15, 8:32:45 PM");</script>
<script>addRow("fotos-interessantes-11.jpg","fotos-interessantes-> 11.jpg",false,"","");</script>
Maybe the most reliable way is to do something like this:
var folder = "img/";
$.ajax({
url : folder,
success: function (data) {
var patt1 = /"([^"]*\.(jpe?g|png|gif))"/gi; // extract "*.jpeg" or "*.jpg" or "*.png" or "*.gif"
var result = data.match(patt1);
result = result.map(function(el) { return el.replace(/"/g, ""); }); // remove double quotes (") surrounding filename+extension // TODO: do this at regex!
var uniqueNames = []; // this array will help to remove duplicate images
$.each(result, function(i, el){
var el_url_encoded = encodeURIComponent(el); // avoid images with same name but converted to URL encoded
console.log("under analysis: " + el);
if($.inArray(el, uniqueNames) === -1 && $.inArray(el_url_encoded, uniqueNames) === -1){
console.log("adding " + el_url_encoded);
uniqueNames.push(el_url_encoded);
$("#slider").append( "<img src='" + el_url_encoded +"' alt=''>" ); // finaly add to HTML
} else{ console.log(el_url_encoded + " already in!"); }
});
},
error: function(xhr, textStatus, err) {
alert('Error: here we go...');
alert(textStatus);
alert(err);
alert("readyState: "+xhr.readyState+"\n xhrStatus: "+xhr.status);
alert("responseText: "+xhr.responseText);
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
As a starter in html world, i would like to know and start using simple APIs to insert into my blog posts.
I tried to include as html values some simple API like: https://bitcoinfees.earn.com/api/v1/fees/recommended and I used examples given here: Display Json data in HTML table using javascript and some others more like: http://jsfiddle.net/sEwM6/258/
$.ajax({
url: '/echo/json/', //Change this path to your JSON file.
type: "post",
dataType: "json",
//Remove the "data" attribute, relevant to this example, but isn't necessary in deployment.
data: {
json: JSON.stringify([
{
id: 1,
firstName: "Peter",
lastName: "Jhons"},
{
id: 2,
firstName: "David",
lastName: "Bowie"}
]),
delay: 3
},
success: function(data, textStatus, jqXHR) {
drawTable(data);
}
});
function drawTable(data) {
var rows = [];
for (var i = 0; i < data.length; i++) {
rows.push(drawRow(data[i]));
}
$("#personDataTable").append(rows);
}
function drawRow(rowData) {
var row = $("<tr />")
row.append($("<td>" + rowData.id + "</td>"));
row.append($("<td>" + rowData.firstName + "</td>"));
row.append($("<td>" + rowData.lastName + "</td>"));
return row;
}
but the result is always blank.
Please, can you give me some hint to can use that API and insert that numbers values for "fastestFee","halfHourFee","hourFee" as html values?
Thank you all!
Welcome to the html world. You are certainly right in assuming that data from APIs is a great way to make your websites more dynamic.
There is an example on W3 Schools on how to handle a http request. I think this is a good place to start https://www.w3schools.com/xml/xml_http.asp. You create a http object that does some sort of data fetching. In this example it is done with the xhttp.send(). At the same time you have a listener that monitors if the onreadystatechange property of the xhttp has changed. And if that change is status 200 (success) then perform some actions.
Here is my JSfiddle with example from your API
http://jsfiddle.net/zvqr6cxp/
Typically these actions would be to structure the returned data and then do something with the data, like show them in a table.
The example shows the native html xhttp object in use with an event listener. Typically as you learn more about this you would probably start using a framework such as jquery or Angular that can handle http requests smoother, keyword here is callback functions.
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
//In this example, I used your API link..first I would do is turn the JSON into a JS object
myObject = JSON.parse(xhttp.responseText)
document.getElementById("fast").innerHTML = myObject.fastestFee
document.getElementById("half").innerHTML = myObject.halfHourFee
document.getElementById("hour").innerHTML = myObject.hourFee
}
};
xhttp.open("GET", "https://bitcoinfees.earn.com/api/v1/fees/recommended", true);
xhttp.send();
Ths script generates a number:
function updateDue() {
var kmold1 = parseInt(<?php echo $km; ?>);
var kmnew1 = parseInt(document.getElementById("kminput").value);
var tot = kmnew1 - kmold1;
document.getElementById("kmtot").innerHTML = tot;
document.getElementById("kmnew").innerHTML = kmnew1;
document.getElementById("kmold").innerHTML = kmold;
}
The number is displayed on a webpage with this code:
Diff in Km: <span name="kmtot" id="kmtot" value=""></span><br>
This is part of an form that is used to post to an other file.
How can I send the output of id="kmtot" to the next php file?
I have tried:
Diff in Km: <span name="kmtot" id="kmtot" value=""></span><br>
Not working.
<input type="hidden" name="kmtot" id="kmtot">
If I add this, the number of id="kmtot" is not displayed on the webpage, and is not transfered.
Any hints or solutions?
If you are using jQuery, use this code:
$.ajax({
url: 'your-php-file.php',
method: 'post',
data: {
'kmtot': $('#kmtot').val(),
},
success: function(data) {
console.log(data);
}
})
In your-php-file.php, $_POST['kmtot'] will return the value of your element with the ID kmtot.
If you are not using jQuery, you could use Fetch API.
Edit 3: The code is now working across numerous objects (thanks to Noam) and he has also helped in getting the random function working alongside it. I'll update the code in the question once its implemented.
Edit 2: I've taken #Noam Almosnino's answer and am now trying to apply it to an Array with numerous objects (unsuccessfully). Here's the Remix link. Please help!
Edit: I've taken some feedback and found this page which talks about using a JSON.parse function. I've edited the code to reflect the new changes but I still can't figure out exactly whats missing.
Original: I thought this previous answer would help in my attempt to parse a json file and return a random string and its related pair (e.g Title-Platform), but I couldn't get it to work. My goal is to render the output as a text item in my scene. I've really enjoyed working with A-frame but am having a hard time finding documentation that can help me in this regard. I tried using the following modified script to get text from the Json file...
AFRAME.registerComponent('super', { // Not working
schema: {
Games: {type: 'array'},
jsonData: {
parse: JSON.parse,
stringify: JSON.stringify}
},
init: function () {
var el = this.el;
el.setAttribute('super', 'jsonData', {src:"https://cdn.glitch.com/b031cbf1-dd2b-4a85-84d5-09fd0cb747ab%2Ftrivia.json?1514896425219"});
var hugeArray = ["Title", "Platform",...];
const el.setAttribute('super', {Games: hugeArray});
el.setAttribute('position', {x:-2, y:2, z:-3});
}
});
The triggers are also set up in my html to render the text. My code is being worked on through glitch.com, any help will be much appreciated!
To load the json, I think you need to use an XMLHttpRequest (as Diego pointed out in the comments), when that's loaded, you can set the text through setAttribute.
Here's a basic example on glitch:
https://glitch.com/edit/#!/a-frame-json-to-text
On init it does the request, then when done, it set's the loaded json text onto the entity.
AFRAME.registerComponent('json-text-loader', {
schema: {},
init: function () {
var textEntity = document.querySelector('#text');
var url = 'json/text.json';
var request = new XMLHttpRequest();
request.open( 'GET', url, true );
request.addEventListener( 'load', function ( event ) {
var jsonText = JSON.parse( event.target.response )
textEntity.setAttribute("value", jsonText.text)
} );
request.send( null );
}
});
Updated version: https://glitch.com/edit/#!/peppermint-direction
AFRAME.registerComponent('json-text-loader', {
schema: {},
init: function () {
var textEntity = document.querySelector('#text');
var url = 'json/text.json';
var request = new XMLHttpRequest();
request.open( 'GET', url, true );
request.addEventListener( 'load', function ( event ) {
var games = JSON.parse( event.target.response ).games;
// Get a random game from the list
var randomGame = games[Math.floor(Math.random()*games.length)];
// Get the next game if it's available
var nextGame = null
if (games.indexOf(randomGame) < games.length - 1) {
nextGame = games[games.indexOf(randomGame) + 1]
}
// Build the string for the games
var gameInfo = randomGame.Title + '\n' + randomGame.Developer + '\n\n'
if (nextGame != null) {
gameInfo += nextGame.Title + '\n' + nextGame.Developer + '\n'
}
textEntity.setAttribute("value", gameInfo);
var sceneEl = document.querySelector('a-scene');
sceneEl.querySelector('a-box').setAttribute('material', {src:"https://cdn.glitch.com/4e63fbc2-a1b0-4e38-b37a-9870b5594af8%2FResident%20Evil.jpg?1514826910998"});
});
request.send( null );
}
});
I want to search a tweet from twitter, it will depend on text or hashtag. Then Show it on <div id="result"> . but i get confused because my code doesn't show the tweet.
Here is my code to read JSON from twitter search :
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript">
$(document).ready(function()
{
$('#btn').click(function()
{
$.getJSON("http://search.twitter.com/search.json?q="+$('#search').val(),function(data)
{
$.each(data.results, function(i,data){
var from = data.from_user;
var tw_content = data.text;
$('#result').append("<p>User : "+from+"<br>Tweet : "+tw_content+"</p>");
});
});
});
});
</script>
<input type="text" id="search"/><input type="button" id="btn" value="cari">
<div id="result">
</div>
And while I run this, nothing happen. anyone can help me ?
I would do something like below:
$(document).ready(function() {
// Declare variables to hold twitter API url and user name
var twitter_api_url = 'http://search.twitter.com/search.json';
var twitter_user = 'behudinnystrom';
// Enable caching
$.ajaxSetup({ cache: true });
// Send JSON request
// The returned JSON object will have a property called "results" where we find
// a list of the tweets matching our request query
$.getJSON(
twitter_api_url + '?callback=?&rpp=5&q=from:' + twitter_user,
function(data) {
$.each(data.results, function(i, tweet) {
// Uncomment line below to show tweet data in Fire Bug console
// Very helpful to find out what is available in the tweet objects
//console.log(tweet);
// Before we continue we check that we got data
if(tweet.text !== undefined) {
// Calculate how many hours ago was the tweet posted
var date_tweet = new Date(tweet.created_at);
var date_now = new Date();
var date_diff = date_now - date_tweet;
var hours = Math.round(date_diff/(1000*60*60));
// Build the html string for the current tweet
var tweet_html = '<div class="tweet_text">';
tweet_html += '<a href="http://www.twitter.com/';
tweet_html += twitter_user + '/status/' + tweet.id + '">';
tweet_html += tweet.text + '<\/a><\/div>';
tweet_html += '<div class="tweet_hours">' + hours;
tweet_html += ' hours ago<\/div>';
// Append html string to tweet_container div
$('#tweet_container').append(tweet_html);
}
});
}
);
});
DEMONSTRATION
You should use jsonp to get the result, because jsonp provides a method to request data from a server in a different domain
Check this FIDDLE
I use $.ajax function with dataType: jsonp here
Check this and this for JSONP