{"name":"jQuery.isFunction","type":"method","title":"jQuery.isFunction()","deprecated":null,"removed":null,"desc":"Determine if the argument passed is a Javascript function object. ","categories":["utilities","version/1.2"],"entries":[{"return":"boolean","signatures":{"added":"1.2","argument":{"desc":"Object to test whether or not it is a function.","name":"obj","type":"PlainObject"}},"examples":[{"desc":"Test a few parameter examples.","code":"\nfunction stub() {}\nvar objs = [\n  function() {},\n  { x:15, y:20 },\n  null,\n  stub,\n  \"function\"\n];\n\njQuery.each( objs, function( i ) {\n  var isFunc = jQuery.isFunction( objs[ i ]);\n  $( \"span\" ).eq( i ).text( isFunc );\n});\n","css":"\n  div {\n    color: blue;\n    margin: 2px;\n    font-size: 14px;\n  }\n  span {\n    color: red;\n  }\n","html":"\n<div>jQuery.isFunction( objs[ 0 ] ) = <span></span></div>\n<div>jQuery.isFunction( objs[ 1 ] ) = <span></span></div>\n<div>jQuery.isFunction( objs[ 2 ] ) = <span></span></div>\n<div>jQuery.isFunction( objs[ 3 ] ) = <span></span></div>\n<div>jQuery.isFunction( objs[ 4 ] ) = <span></span></div>\n"},{"desc":"Finds out if the parameter is a function.","code":"\n$.isFunction(function() {});\n","results":"\ntrue\n"}],"longdesc":"\n    <p><strong>Note:</strong> As of jQuery 1.3, functions provided by the browser like <code>alert()</code> and DOM element methods like <code>getAttribute()</code> are not guaranteed to be detected as functions in browsers such as Internet Explorer.</p>\n  "}]}