ajaxSubmit plugin jQuery version 1.4.2 JSON issue

Author：Eve Cole Update Time：2025-02-07 17:14:06

The jQuery Form plug-in reports errors when returning JSON data based on jQuery v1.4.2; modify the following content to recover;

The original background output data format is: {sitename:'Developer Network',siteurl:'www.AAA.net',level:10} It needs to be changed to {"sitename":"Developer Network","siteurl":"www .AAA.net","level":10}

That is, the name must be included in double quotes; because jQuery version 1.4.2 adds regular judgment in parseJSON method

if ( /^[],:{}s]*$/.test(data. replace(/\(?:[" \/bfnrt]|u[0-9a-fA-F]{ 4})/g , "@")
.replace(/"[^" \nr]*"|true|false|null|-?d+(?:.d*)?(?:[eE][+-]? d+)?/g , "]")
.replace(/(?:^|:|,)(?:s*[)+/g, "")) ) {

// Try to use the native JSON parser first
return window.JSON && window.JSON.parse?
window.JSON.parse( data ):
(new Function("return " + data))();

} else {
jQuery.error( "Invalid JSON: " + data );
}

Where to modify the jQuery Form plugin

if (scr || s.textarea) {
// see if user embedded response in textarea
var ta = doc.getElementsByTagName('textarea')[0];
if (ta) {
xhr.responseText = ta.value;
}
else if (scr) {
// account for browsers injecting pre around json response
var pre = doc.getElementsByTagName('pre')[0];
if (pre) {
xhr.responseText = pre.innerHTML;
}
}
}
else if (s.dataType == 'xml' && !xhr.responseXML && xhr.responseText != null) {
xhr.responseXML = toXml(xhr.responseText);
}

Modified to:

if (scr || s.textarea) {
// see if user embedded response in textarea
var ta = doc.getElementsByTagName('textarea')[0];
if (ta) {
xhr.responseText = ta.value;
}
else if (scr) {
// account for browsers injecting pre around json response
var pre = doc.getElementsByTagName('pre')[0];
if (pre) {
xhr.responseText = pre.innerHTML;
} else xhr.responseText=doc.body.innerHTML;
}
}
else if (s.dataType == 'xml' && !xhr.responseXML && xhr.responseText != null) {
xhr.responseXML = toXml(xhr.responseText);
}

Original address: http://www.vifo.net/Program/JavaScript/10090191.shtml