86 lines
2.3 KiB
JavaScript
86 lines
2.3 KiB
JavaScript
(function( jQuery ) {
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var jsc = jQuery.now(),
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jsre = /\=\?(&|$)/,
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rquery_jsonp = /\?/;
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// Default jsonp callback name
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jQuery.ajaxSettings.jsonpCallback = function() {
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return "jsonp" + jsc++;
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};
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// Normalize jsonp queries
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// 1) put callback parameter in url or data
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// 2) sneakily ensure transportDataType is json
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// 3) ensure options jsonp is always provided so that jsonp requests are always
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// json request with the jsonp option set
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jQuery.ajax.prefilter("json jsonp", function(s) {
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var transportDataType = s.dataTypes[ 0 ];
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s.dataTypes[ 0 ] = "json";
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if ( s.jsonp ||
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transportDataType === "jsonp" ||
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transportDataType === "json" && ( jsre.test(s.url) || typeof(s.data) === "string" && jsre.test(s.data) ) ) {
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var jsonp = s.jsonp = s.jsonp || "callback",
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jsonpCallback = s.jsonpCallback =
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jQuery.isFunction( s.jsonpCallback ) ? s.jsonpCallback() : s.jsonpCallback,
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url = s.url.replace(jsre, "=" + jsonpCallback + "$1"),
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data = s.url == url && typeof(s.data) === "string" ? s.data.replace(jsre, "=" + jsonpCallback + "$1") : s.data;
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if ( url == s.url && data == s.data ) {
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url = url += (rquery_jsonp.test( url ) ? "&" : "?") + jsonp + "=" + jsonpCallback;
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}
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s.url = url;
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s.data = data;
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}
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// Bind transport to json dataType
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}).transport("json", function(s) {
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if ( s.jsonp ) {
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// Put callback in place
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var responseContainer,
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jsonpCallback = s.jsonpCallback,
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previous = window[ jsonpCallback ];
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window [ jsonpCallback ] = function( response ) {
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responseContainer = [response];
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};
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s.complete = [function() {
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// Set callback back to previous value
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window[ jsonpCallback ] = previous;
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// Call if it was a function and we have a response
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if ( previous) {
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if ( responseContainer && jQuery.isFunction ( previous ) ) {
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window[ jsonpCallback ] ( responseContainer[0] );
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}
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} else {
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// else, more memory leak avoidance
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try{ delete window[ jsonpCallback ]; } catch(e){}
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}
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}, s.complete ];
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// Use data converter to retrieve json after script execution
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s.converters["script json"] = function() {
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if ( ! responseContainer ) {
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jQuery.error( jsonpCallback + " was not called" );
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}
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return responseContainer[ 0 ];
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};
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// Delegate to script transport
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return "script";
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}
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});
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})( jQuery );
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