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674 BJavaScriptView Raw
1define( function() {
2 "use strict";
3
4 return function isFunction( obj ) {
5
6 // Support: Chrome <=57, Firefox <=52
7 // In some browsers, typeof returns "function" for HTML <object> elements
8 // (i.e., `typeof document.createElement( "object" ) === "function"`).
9 // We don't want to classify *any* DOM node as a function.
10 // Support: QtWeb <=3.8.5, WebKit <=534.34, wkhtmltopdf tool <=0.12.5
11 // Plus for old WebKit, typeof returns "function" for HTML collections
12 // (e.g., `typeof document.getElementsByTagName("div") === "function"`). (gh-4756)
13 return typeof obj === "function" && typeof obj.nodeType !== "number" &&
14 typeof obj.item !== "function";
15 };
16
17} );