string -> variable name

[Konrad Mathieu]

How do I - within in a function - make Javascript recognize a string as a
variable name?

Thanks and cheers,
Konrad

 

[Evertjan.]

Konrad Mathieu wrote on 05 jul 2003 in comp.lang.javascript:

How do I - within in a function - make Javascript recognize a string as a
variable name?

<script>
var a="blah"
var blah="bloob"
var blib="bloobbloob"

function f(){
alert(window[a])
alert(window["blib"])
}

f() // alerts: bloob, bloobbloob

</script>

 

[Konrad Mathieu]

Thank you guys! This helped me a great deal.

Cheers,
Konrad

How do I - within in a function - make Javascript recognize a string as a
variable name?

Thanks and cheers,
Konrad

How you do that depends on what the string's variable representation
represents.

For the most part, you simply use bracket notation.

If the string points at a variable, window['StringHere'] will give you a
reference to global variables (there are some cavaets to it I believe).

If its a name of a form element:

document.forms[varName].elements[varName2].propertyName