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how to return anonymous function in javascript

 原文  2013-06-29 16:00:37  0   2    javascript

Question

<html>
    <head>
        <script>
             function test(){                   
                 return function(){
                  alert("hi");
                }                
             }
             test();
        </script>
    </head>
    <body>
    </body>
</html>

This is my code, can I ask why it doesnt work properly??

2 answers

solution1
 11 ACCPTED  2013-06-29 16:02:09

Because you're returning your function but not invoking it. Try this: 

test()();

Here is a fiddle

solution2
 3  2013-06-29 16:04:16

I think you might be confused. test() returns a function reference, but it won't execute it.

You could do something like this 

var alertFunc = test(); // return function reference
alertFunc(); // call the function

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