UPDATED: after some looking around, it appears that the issue is with IE8 and replacing innerHTML in tables, rather than the json code (see here). An alert proves that the json code is returning the expected text, but I can't for the life of me get it to shove into the spot I want it. Apparently there's a problem with innerHTML and table cells, and you can't replace an entire table's contents; you have to target a specific cell. However, I need to generate the contents of tbody - there isn't a single existing row or cell I can use.
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I've been handed some code written by a developer who is no longer with the company. The code works with no problem in Firefox and Chrome, but does not work at all in IE (7 or 8). It is not throwing any errors; it just isn't displaying the response. Here are the two functions; can anyone help me out? I've only just gotten back into web work after 10 years with legacy apps, so I don't know where to start.
var xmlhttp;
var the_object = {};
var suggestions = [];
function loadXMLDoc(url) {
xmlhttp=null;
if (window.XMLHttpRequest) {// code for IE7, Firefox, Mozilla, etc.
xmlhttp = new XMLHttpRequest();
} else if (window.ActiveXObject) {// code for IE5, IE6
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
if (xmlhttp != null) {
xmlhttp.onreadystatechange = onResponse;
xmlhttp.open("GET",url,true);
xmlhttp.send(null);
} else {
alert("Your browser does not support XMLHTTP.");
}
}
function onResponse() {
if (xmlhttp.readyState!=4) return;
if (xmlhttp.status!=200) {
alert("Problem retrieving XML data");
return;
}
//JSON response code
the_object = eval('(' + xmlhttp.responseText + ')');
if (the_object.errMsg){
alert(the_object.errMsg);
}else{
**document.getElementById("shoppingCartTable").innerHTML = the_object.cartHTML;**
}
}
function searchMerchants(term){
url = "/merchant-list/?format=json&q=" + term;
loadXMLDoc(url);
}
function addToCart(id){
var denElem = document.getElementById('item'+id+'_den');
var quanElem = document.getElementById('item'+id+'_quan');
if (denElem.options){
var den = denElem.options[denElem.selectedIndex].value;
}else{
var den = denElem.value;
}
var quan = quanElem.options[quanElem.selectedIndex].value;
var voucherNbr = document.getElementById("voucherNbr").value;
var url = "/redeem/add-to-cart/?action=add&format=json&voucherNbr=" + voucherNbr + "&merchantId=" + id + "&denomination=" + den + "&quantity=" + quan;
loadXMLDoc(url);
}
I found that if I generated the entire table via json rather than just the body, and targeting a span's innerHTML, it works fine.
Related
Say I've got a reference to a html file as a Blob b and I create a URL for it, url = URL.createObjectURL(b);.
This gives me something that looks like blob:http%3A//example.com/a0440b61-4850-4568-b6d1-329bae4a3276
I then tried opening this in an <iframe> with a GET parameter ?foo=bar, but it didn't work. How can I pass the parameter?
var html ='<html><head><title>Foo</title></head><body><script>document.body.textContent = window.location.search<\/script></body></html>',
b = new Blob([html], {type: 'text/html'}),
url = URL.createObjectURL(b),
ifrm = document.createElement('iframe');
ifrm.src = url + '?foo=bar';
document.body.appendChild(ifrm);
// expect to see ?foo=bar in <iframe>
DEMO
I don't think adding a query string to the url will work as it essentially changes it to a different url.
However if you simply want to pass parameters you can use the hash to add a fragment to the url
ifrm.src = url + '#foo=bar';
http://jsfiddle.net/thpf584n/1/
For completeness sake, if you want to be able to reference a blob that has as question mark "query string" indicator in it, you can do so in Firefox any way you choose, such as: blob:lalalal?thisworksinfirefox
For Chrome, the above will not work, but this will: blob:lalalla#?thisworksinchromeandfirefox
And for Safari and Microsaft, nothing really works, so do a pre test like so, then plan accordingly:
function initScriptMode() {
var file = new Blob(["test"], {type: "text/javascript"});
var url = URL.createObjectURL(file) + "#test?test";
var request = new XMLHttpRequest();
request.responseType = responseType || "text";
request.open('GET', url);
request.onload = function() {
alert("you can use query strings")
};
try {
request.send();
}
catch(e) {
alert("you can not use query strings")
}
}
If you are doing this with a Javascript Blob for say a WebWorker then you can just to add the parameters into the Blob constructor as a global variable:
const parameters = 'parameters = ' + JSON.stringify({foo:'bar'});
const body = response.body; // From some previous HTTP request
const blob = new Blob([parameters, body], { type: 'application/javascript' });
new Worker(URL.createObjectURL(blob));
Or more general case just store the original URL on the location object
const location = 'location.originalHref = "' + url + '";';
const body = response.body; // From some previous HTTP request
const blob = new Blob([location, body], { type: 'application/javascript' });
new Worker(URL.createObjectURL(blob));
You could also do this with HTML if you can add them say to the root <HTML> tag as attributes or use the <BASE> element for the url or insert them as a script tag but this would require you to modify the response HTML rather then just prepend some extra data
I am trying to download a file from my web service. I need to pass complex meta data to the server to know how to download the file. Here is how Im able to accomplish that in evergreen browsers:
// i use angular but not important for this demo
$http.post({ /* complex object */ }).then(xhr){
// use download attribute
// http://davidwalsh.name/download-attribute
var hiddenElement = document.createElement('a');
hiddenElement.href = 'data:attachment/csv,' + encodeURI(xhr.data);
hiddenElement.target = '_blank';
hiddenElement.download = $scope.filename + '.csv';
hiddenElement.click();
hiddenElement.remove();
});
of course sense the download attribute is not available on IE I'm not able to post. A workaround I've used before is:
$("body>#download_iFrame").remove();
$("body").append('<iframe name="downloadFrame" id="download_iFrame" style="display:none;" src="" />');
$("#form-download")[0].submit();
and then in html
<form target="downloadFrame"
action="'api/search/export/'"
id="form-download"></form>
problem is I can't pass a object like that. Sure I can put a hidden input and serialize its value but my object is kinda big so that ends up being a problem.
How do you work around this?
If you're only concerned about recent browsers you might take a look at using FileSaver.js. When running on IE10+ it uses navigator.msSaveOrOpenBlob.
var xhr = new XMLHttpRequest();
xhr.open("GET", url, true);
xhr.responseType = "blob";
xhr.onload = fuction (eventInfo) {
if (this.status == 200) {
var blob = this.response;
// FileSaver.js usage:
saveAs(blob, "filename.ext");
// Or IE10+ specific:
navigator.msSaveOrOpenBlob(blob, "filename.ext");
}
};
xhr.send();
From the following code I'm creating a dynamic anchor tag which downloads a file. This code works well in Chrome but not in IE. How can I get this working
<div id="divContainer">
<h3>Sample title</h3>
</div>
<button onclick="clicker()">Click me</button>
<script type="text/javascript">
function clicker() {
var anchorTag = document.createElement('a');
anchorTag.href = "http://cdn1.dailymirror.lk/media/images/finance.jpg";
anchorTag.download = "download";
anchorTag.click();
var element = document.getElementById('divContainer');
element.appendChild(anchorTag);
}
</script>
Internet Explorer does not presently support the Download attribute on A tags.
See http://caniuse.com/download and http://status.modern.ie/adownloadattribute; the latter indicates that the feature is "Under consideration" for IE12.
In my case, since there's a requirement to support the usage of IE 11 (version 11.0.9600.18665), I ended up using the solution provided by #Henners on his comment:
// IE10+ : (has Blob, but not a[download] or URL)
if (navigator.msSaveBlob) {
return navigator.msSaveBlob(blob, fileName);
}
It's quite simple and practical.
Apparently, this solution was found on the Javascript download function created by dandavis.
Old question, but thought I'd add our solution. Here is the code I used on my last project. It's not perfect, but it passed QA in all browsers and IE9+.
downloadCSV(data,fileName){
var blob = new Blob([data], {type: "text/plain;charset=utf-8;"});
var anchor = angular.element('<a/>');
if (window.navigator.msSaveBlob) { // IE
window.navigator.msSaveOrOpenBlob(blob, fileName)
} else if (navigator.userAgent.search("Firefox") !== -1) { // Firefox
anchor.css({display: 'none'});
angular.element(document.body).append(anchor);
anchor.attr({
href: 'data:attachment/csv;charset=utf-8,' + encodeURIComponent(data),
target: '_blank',
download: fileName
})[0].click();
anchor.remove();
} else { // Chrome
anchor.attr({
href: URL.createObjectURL(blob),
target: '_blank',
download: fileName
})[0].click();
}
}
Using the ms specific API worked best for us in IE. Also note that some browsers require the anchor to actually be in the DOM for the download attribute to work, whereas Chrome, for example, does not. Also, we found some inconsistencies with how Blobs work in various browsers. Some browsers also have an export limit. This allows the largest possible CSV export in each browser afaik.
As of build 10547+, the Microsoft Edge browser is now supporting the download attribute on a tags.
Download Image
Edge features update: https://dev.windows.com/en-us/microsoft-edge/platform/changelog/desktop/10547/
a[download] standard: http://www.w3.org/html/wg/drafts/html/master/links.html#attr-hyperlink-download
This code fragment allows saving blob in the file in IE, Edge and other modern browsers.
var request = new XMLHttpRequest();
request.onreadystatechange = function() {
if (request.readyState === 4 && request.status === 200) {
// Extract filename form response using regex
var filename = "";
var disposition = request.getResponseHeader('Content-Disposition');
if (disposition && disposition.indexOf('attachment') !== -1) {
var filenameRegex = /filename[^;=\n]*=((['"]).*?\2|[^;\n]*)/;
var matches = filenameRegex.exec(disposition);
if (matches != null && matches[1]) filename = matches[1].replace(/['"]/g, '');
}
if (window.navigator.msSaveOrOpenBlob) { // for IE and Edge
window.navigator.msSaveBlob(request.response, filename);
} else {
// for modern browsers
var a = document.createElement('a');
a.href = window.URL.createObjectURL(request.response);
a.download = filename;
a.style.display = 'none';
document.body.appendChild(a);
a.click();
}
}
button.disabled = false;
dragArea.removeAttribute('spinner-visible');
// spinner.style.display = "none";
};
request.open("POST", "download");
request.responseType = 'blob';
request.send(formData);
For IE and Edge use: msSaveBlob
Use my function
It bind your atag to download file in IE
function MS_bindDownload(el) {
if(el === undefined){
throw Error('I need element parameter.');
}
if(el.href === ''){
throw Error('The element has no href value.');
}
var filename = el.getAttribute('download');
if (filename === null || filename === ''){
var tmp = el.href.split('/');
filename = tmp[tmp.length-1];
}
el.addEventListener('click', function (evt) {
evt.preventDefault();
var xhr = new XMLHttpRequest();
xhr.onloadstart = function () {
xhr.responseType = 'blob';
};
xhr.onload = function () {
navigator.msSaveOrOpenBlob(xhr.response, filename);
};
xhr.open("GET", el.href, true);
xhr.send();
})
}
Append child first and then click
Or you can use window.location= 'url' ;
As mentioned in earlier answer , download attribute is not supported in IE . As a work around, you can use iFrames to download the file . Here is a sample code snippet.
function downloadFile(url){
var oIframe = window.document.createElement('iframe');
var $body = jQuery(document.body);
var $oIframe = jQuery(oIframe).attr({
src: url,
style: 'display:none'
});
$body.append($oIframe);
}
I copied the code from here and updated it for ES6 and ESLint and added it to my project.
You can save the code to download.js and use it in your project like this:
import Download from './download'
Download('/somefile.png', 'somefile.png')
Note that it supports dataURLs (from canvas objects), and more... see https://github.com/rndme for details.
I need some help with HTML5. I have a script that loops through all the uploaded files and gets each file details. Currently I am using HTML5 techniques that include FileReader. The FileReader function only works in Chrome and Firefox, so I am looking for an alternative which will work in all of the other browsers.
I saw the Stack Overflow question Flash alternative for FileReader HTML 5 API, but I wasn't able to figure how to use this Flash thing, and aren't there any other solutions so I can loop through all of the uploaded files and get each file details (which will work in Safari and Internet Explorer)?
Ended up not using FileReader at all, instead I looped through event.files and got each file by files[i] and sent an AJAX request by XHR with a FormData object (worked for me because I decided I don't need to get the file data):
var xhrPool = {};
var dt = e.dataTransfer;
var files = (e.files || dt.files);
for (var i = 0; i < files.length; i++) {
var file = files[i];
// more code...
xhrPool[i] = getXMLHttpRequest();
xhrPool[i].upload.onprogress = uploadProgress;
initXHRRequest(xhrPool[i], i, file);
data = initFormData(i, file);
xhrPool[i].send(data);
}
function initFormData(uploaded, file) {
var data = new FormData();
data.append(uploaded, file);
// parameters...
return data;
}
function uploadProgress() {
// code..
}
function initXHRRequest(xhr, uploaded, file) {
// code... onreadystatechange...
xhr.open("POST", "ajax/upload.php");
xhr.setRequestHeader("X-File-Name", file.name);
}
function getXMLHttpRequest()
{
if (window.XMLHttpRequest) {
return new XMLHttpRequest();
}
else {
try {
return new ActiveXObject("MSXML2.XMLHTTP.3.0");
}
catch(ex) {
return null;
}
}
}
Safari was the first one to actually implement the HTML5 file API, and there are several demos. Andrea Giammarchi has a nice description on his blog. There are several frameworks to handle this as well which also have fallbacks for Internet Explorer. Fancyupload is one that comes to mind.
How can I get an HTML page (.html) to read the contents of a text document that can be found in the same folder as the .html file? The server is IIS.
Thanks
Google for server-side includes.
It seems like you can use #include directives in IIS.
http://msdn.microsoft.com/en-us/library/ms525185.aspx
But to be honest I strongly suggest using a scripting language, either PHP or something in the ASP family.
one hesitates to suggest iframes, but out of completeness...
(You probably need server side includes, but you probably have bigger issues in general)
By adding the following JavaScript code to the element of the web page:
<script>
function clientSideInclude(id, url)
{
var req = false;
// For Safari, Firefox, and other non-MS browsers
if (window.XMLHttpRequest)
{
try {
req = new XMLHttpRequest();
} catch (e) {
req = false;
}
} else if (window.ActiveXObject) {
// For Internet Explorer on Windows
try {
req = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
req = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e) {
req = false;
}
}
}
var element = document.getElementById(id);
if (!element) {
alert("Bad id " + id +
"passed to clientSideInclude." +
"You need a div or span element " +
"with this id in your page.");
return;
}
if (req) {
// Synchronous request, wait till we have it all
req.open('GET', url, false);
req.send(null);
element.innerHTML = req.responseText;
} else {
element.innerHTML =
"Sorry, your browser does not support " +
"XMLHTTPRequest objects. This page requires " +
"Internet Explorer 5 or better for Windows, " +
"or Firefox for any system, or Safari. Other " +
"compatible browsers may also exist.";
}
}
</script>
IIS can do server-side includes. BUt, if you can't do this, and want to include the text file in the HTML, you could grab the file with an XMLHTTPRequest object and insert it into the DOM with Javascript.
Naturally, a JS library will make this easier. For example in prototype:
new Ajax.Updater($('id_of_div'), 'http://yourdomain/path/to/file.txt');
that would grab the file and drop the contents into <div id="id_of_div"></div>
Or in jQuery:
$("#id_of_div").load("http://yourdomain/path/to/file.txt");
You can put an url to the text file directly, the user will download it by clicking. If this is not what you want, then you can probably use Server Side Includes (see here and here). If this does not work, you must write a script (ASP?) to read the file.