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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>runoops自学教程(runoops.com)</title> <style> div { color: blue; margin: 2px; font-size: 14px; } span { color: red; } </style> <script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js"></script> </head> <body> <div>jQuery.isFunction( objs[ 0 ] ) = <span></span></div> <div>jQuery.isFunction( objs[ 1 ] ) = <span></span></div> <div>jQuery.isFunction( objs[ 2 ] ) = <span></span></div> <div>jQuery.isFunction( objs[ 3 ] ) = <span></span></div> <div>jQuery.isFunction( objs[ 4 ] ) = <span></span></div> <script> $(function () { function stub() {} var objs = [ function() {}, { x:15, y:20 }, null, stub, "function" ]; $.each( objs, function( i ) { var isFunc = $.isFunction( objs[ i ]); $( "span" ).eq( i ).text( isFunc ); }); }) </script> </body> </html>
运行结果：