2

I simply want to access the value of array status from another function. However, the alert is giving me value as undefined. Here's my code:

Test.php: 

<html>
 <body>
 <script>
 var status=[];
 status[0]='1';
 calculateInput();
 function calculateInput(){
 alert(status[0]);
 }
 </script>
 </body>
</html>
hichris123
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asked Mar 23, 2014 at 18:45
7
  • Where are you calling calculateInput() Commented Mar 23, 2014 at 18:47
  • Maybe clarify type="text/javascript" in the script-tag? Not sure that that's the problem... Commented Mar 23, 2014 at 18:48
  • I even tried to remove var initilization for status as i had read somewhere to make array global you have to use status=[]; but still value comes as undefined Commented Mar 23, 2014 at 18:50
  • Interestingly, your code works just fine in a JSFiddle: jsfiddle.net/A7Z3N (Firefox, at least.) Commented Mar 23, 2014 at 18:51
  • In the javascript itself there is function call for calculateInput Commented Mar 23, 2014 at 18:51

2 Answers 2

3

You are colliding with window.status:

function calculateInput () {
 alert( status === window.status ); // true
}

To avoid this, rename your array or get out of the global scope:

(function IIFE () {
 var status = [];
 status[0] = "1";
 calculateInput();
 function calculateInput () {
 alert( status[0] );
 }
}());
answered Mar 23, 2014 at 18:50
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3 Comments

actually I also want to use the array in another function. So I have to use global.
@DikshayPoojary You don't need to put it in the global scope. If you still want to, namespace it or given it a different name.
JavaScript is great, you can overwrite undefined "constant", but window.status is protected... :)
1

Change your variable name from status to something else

ex.

<html>
 <body>
 <script>
 var mystatus=[];
 mystatus[0]='1';
 calculateInput();
 function calculateInput(){
 alert(mystatus[0]);
 }
 </script>
 </body>
</html>
answered Mar 23, 2014 at 18:53

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