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Editorial Team
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Asked: 2026-06-12T02:14:35+00:00

I have a form that looks something like this <FORM> <INPUT TYPE=’hidden’ NAME=’search0′ VALUE=’a’>

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I have a form that looks something like this

<FORM>
    <INPUT TYPE='hidden' NAME='search0' VALUE='a'> 
    <INPUT TYPE='hidden' NAME='search1' VALUE='b'>
    ... etc 
    <INPUT TYPE='hidden' NAME='search100' VALUE='abc'>
</FORM>

In my javascript i would like to do something along the lines of :

 for (i=0;i<=100;i++) { 
     document.forms[0].search+i+.value = '';
 }

Clearly this is not valid syntax, I am just not sure how to go about getting all 100 of my hidden inputs and change all their values to empty. Any help greatly appreciated!

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1 Answer

  1. Editorial Team

    Note that .0 would not be valid syntax – therefore you use [0] because you can put any expression inside such brackets (e.g. numbers, strings). Indeed, you can also use the + operator inside since + can be applied to expressions. This solves your issue:

    document.forms[0]["search" + i].value = '';

    You could also use ["forms"] instead of .forms, etc. Basically, the . notation is only a subset of the [] notation.

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