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# jQuery.isFunction() Method [jQuery Misc Methods](#) ## Example Test whether some parameters are functions $(function(){function stub(){}var objs = [function(){}, {x:15, y:20}, null, stub, "function"]; $.each(objs, function(i){var isFunc = $.isFunction(objs); $("span").eq(i).text(isFunc); }); }) [Try it »](#) * * * ## Definition and Usage The $.isFunction() function is used to determine whether the specified parameter is a function. **Note:** In versions after jQuery 1.3, for example in Internet Explorer, browser-provided functions like alert(), and DOM element methods (such as getAttribute()) will not be considered functions. * * * ## Syntax _$_.isFunction( object ) | Parameter | Description | | :--- | :--- | | _object_ | Any type. The value to be checked. | * * *  ## More Examples (#) Determine whether the passed parameter is a function. * * jQuery Misc Methods](#)