1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
import jQuery from "../core.js";
import document from "../var/document.js";
import "../ajax.js";
function canUseScriptTag( s ) {
// A script tag can only be used for async, cross domain or forced-by-attrs requests.
// Sync requests remain handled differently to preserve strict script ordering.
return s.crossDomain || s.scriptAttrs ||
// When dealing with JSONP (`s.dataTypes` include "json" then)
// don't use a script tag so that error responses still may have
// `responseJSON` set. Continue using a script tag for JSONP requests that:
// * are cross-domain as AJAX requests won't work without a CORS setup
// * have `scriptAttrs` set as that's a script-only functionality
// Note that this means JSONP requests violate strict CSP script-src settings.
// A proper solution is to migrate from using JSONP to a CORS setup.
( s.async && jQuery.inArray( "json", s.dataTypes ) < 0 );
}
// Install script dataType. Don't specify `content.script` so that an explicit
// `dataType: "script"` is required (see gh-2432, gh-4822)
jQuery.ajaxSetup( {
accepts: {
script: "text/javascript, application/javascript, " +
"application/ecmascript, application/x-ecmascript"
},
converters: {
"text script": function( text ) {
jQuery.globalEval( text );
return text;
}
}
} );
// Handle cache's special case and crossDomain
jQuery.ajaxPrefilter( "script", function( s ) {
if ( s.cache === undefined ) {
s.cache = false;
}
// These types of requests are handled via a script tag
// so force their methods to GET.
if ( canUseScriptTag( s ) ) {
s.type = "GET";
}
} );
// Bind script tag hack transport
jQuery.ajaxTransport( "script", function( s ) {
if ( canUseScriptTag( s ) ) {
var script, callback;
return {
send: function( _, complete ) {
script = jQuery( "<script>" )
.attr( s.scriptAttrs || {} )
.prop( { charset: s.scriptCharset, src: s.url } )
.on( "load error", callback = function( evt ) {
script.remove();
callback = null;
if ( evt ) {
complete( evt.type === "error" ? 404 : 200, evt.type );
}
} );
// Use native DOM manipulation to avoid our domManip AJAX trickery
document.head.appendChild( script[ 0 ] );
},
abort: function() {
if ( callback ) {
callback();
}
}
};
}
} );
|
