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Make sure we have a fallback when XMLHttpRequest is manually disabled. Fixes #6298.

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This commit is contained in:
John Resig 2010-09-28 10:12:33 -07:00
parent 0368606c08
commit 873c28425f
1 changed files with 24 additions and 12 deletions
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36
src/ajax.js
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@ -180,19 +180,10 @@ jQuery.extend({
password: null,
traditional: false,
*/
// Create the request object; Microsoft failed to properly
// implement the XMLHttpRequest in IE7 (can't request local files),
// so we use the ActiveXObject when it is available
// This function can be overriden by calling jQuery.ajaxSetup
xhr: window.XMLHttpRequest && (window.location.protocol !== "file:" || !window.ActiveXObject) ?
function() {
return new window.XMLHttpRequest();
} :
function() {
try {
return new window.ActiveXObject("Microsoft.XMLHTTP");
} catch(e) {}
},
xhr: function() {
return new window.XMLHttpRequest();
},
accepts: {
xml: "application/xml, text/xml",
html: "text/html",
@ -695,6 +686,27 @@ jQuery.extend( jQuery.ajax, {
});
/*
* Create the request object; Microsoft failed to properly
* implement the XMLHttpRequest in IE7 (can't request local files),
* so we use the ActiveXObject when it is available
* Additionally XMLHttpRequest can be disabled in IE7/IE8 so
* we need a fallback.
*/
if ( window.ActiveXObject ) {
jQuery.ajaxSettings.xhr = function() {
if ( window.location.protocol !== "file:" ) {
try {
return new window.XMLHttpRequest();
} catch(e) {}
}
try {
return new window.ActiveXObject("Microsoft.XMLHTTP");
} catch(e) {}
};
}
// Does this browser support XHR requests?
jQuery.support.ajax = !!jQuery.ajaxSettings.xhr();