How do I call a function defined in a javascript variable - Stack Overflow

admin管理员组

文章数量:1391064

I have a function defined in a javascript variable. How do I call that function within a javascript function?

function clear_viewer() {
     var stop_function = "jwplayer.stop();";
     // call stop_function here
}

Thanks.

I have a function defined in a javascript variable. How do I call that function within a javascript function?

function clear_viewer() {
     var stop_function = "jwplayer.stop();";
     // call stop_function here
}

Thanks.

• javascript
• function
• variables

Share Improve this question Follow asked Feb 2, 2012 at 18:08 user823527user823527 3,7121717 gold badges6969 silver badges111111 bronze badges 1

• Why are you storing the function as string, simply call jwplayer().stop()? – proko Commented Feb 2, 2012 at 18:14

Add a ment  | 

3 Answers 3

Sorted by: Reset to default 4

function clear_viewer() {
     var stop_function = "jwplayer.stop();";
     eval(stop_function);
}

You shouldn't do this though, eval should be avoided if at all possible. Instead you should do something more like this, which creates a function directly for later execution.

function clear_viewer() {
     var stop_function = function() {
       jwplayer.stop();
     };
     stop_function();
}

Could always go with the 'all evil' eval():

eval(stop_function);

Obviously you need to be very careful when using eval so that you don't wind up executing malicious code accidentally. Another option would be to turn stop_function into an anonymous function that executes your code:

var stop_function = function(){
    jwplayer.stop();
};

stop_function();

function clear_viewer() {
     var stop_function = function(){ jwplayer.stop();};
     stop_function();
}

本文标签： How do I call a function defined in a javascript variableStack Overflow