Get value of variable by dynamic variable name

Question

How can I get the value of variable mjt_plan1 by using a dynamic variable plan?

jQuery(document).ready(function () {
    var plan = 'plan1';
    var mjt_plan1 = '10000';
    alert('mjt_' + plan);
});

Possible duplicate of [Use dynamic variable names in JavaScript](https://stackoverflow.com/questions/5117127/use-dynamic-variable-names-in-javascript) — CertainPerformance, Mar 13 '19 at 05:33
tested both : your suggestion and checked provided link too , No result :( — Madhavi Jha, Mar 13 '19 at 05:46
Possible duplicate of [How to find JavaScript variable by its name](https://stackoverflow.com/questions/724857/how-to-find-javascript-variable-by-its-name) — Nasser Ali Karimi, Mar 13 '19 at 06:44

score 0 · Answer 1 · answered Mar 13 '19 at 05:49

0

    jQuery(document).ready(function(){
        var plan = 'plan1';
        var mjt_plan1 = '10000';
        alert(window['mjt_' + plan]);
    });

answered Mar 13 '19 at 05:49

Nouman Saleem

337
4
11

1

better option than eval. use of window to get declared variable – Ali Zain Mar 14 '19 at 13:27

score 0 · Answer 2 · answered Mar 13 '19 at 05:50

0

How to find JavaScript variable by its name

<script type="text/javascript">
    jQuery(document).ready(function(){
        var plan = 'plan1';
        var mjt_plan1 = '10000';
        alert (eval ('mjt_'+plan));

    });
</script>

answered Mar 13 '19 at 05:50

Madhavi Jha

129
4

It's worth noting that [`eval()` can be dangerous and slow](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/eval#Do_not_ever_use_eval!). – showdev Mar 13 '19 at 07:31

Get value of variable by dynamic variable name

2 Answers2