80 lines
2.0 KiB
JavaScript
80 lines
2.0 KiB
JavaScript
(function( jQuery ) {
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var jsc = jQuery.now(),
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jsre = /(\=)\?(&|$)|\?\?/i;
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// Default jsonp settings
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jQuery.ajaxSetup({
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jsonp: "callback",
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jsonpCallback: function() {
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return jQuery.expando + "_" + ( jsc++ );
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}
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});
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// Detect, normalize options and install callbacks for jsonp requests
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jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) {
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var inspectData = s.contentType === "application/x-www-form-urlencoded" &&
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( typeof s.data === "string" );
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if ( s.dataTypes[ 0 ] === "jsonp" ||
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s.jsonp !== false && ( jsre.test( s.url ) ||
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inspectData && jsre.test( s.data ) ) ) {
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var responseContainer,
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jsonpCallback = s.jsonpCallback =
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jQuery.isFunction( s.jsonpCallback ) ? s.jsonpCallback() : s.jsonpCallback,
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previous = window[ jsonpCallback ],
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url = s.url,
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data = s.data,
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replace = "$1" + jsonpCallback + "$2";
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if ( s.jsonp !== false ) {
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url = url.replace( jsre, replace );
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if ( s.url === url ) {
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if ( inspectData ) {
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data = data.replace( jsre, replace );
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}
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if ( s.data === data ) {
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// Add callback manually
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url += (/\?/.test( url ) ? "&" : "?") + s.jsonp + "=" + jsonpCallback;
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}
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}
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}
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s.url = url;
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s.data = data;
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// Install callback
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window[ jsonpCallback ] = function( response ) {
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responseContainer = [ response ];
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};
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// Clean-up function
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jqXHR.always(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 ( responseContainer && jQuery.isFunction( previous ) ) {
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window[ jsonpCallback ]( responseContainer[ 0 ] );
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}
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});
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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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// force json dataType
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s.dataTypes[ 0 ] = "json";
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// Delegate to script
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return "script";
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}
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});
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})( jQuery );
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