<script type="text/javascript">
function up(d,mul)
{
alert(d);
form1.d.value=mul;
}
</script>
up is a function name with which i am trying to update the value of field(field name=d). But its not working. plz somebody help me.
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may be its document.form1.d.value = mul; ?Kasturi– Kasturi2010-09-30 19:16:33 +00:00Commented Sep 30, 2010 at 19:16
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1How are you calling the function? What does your HTML look like? Can you edit your question and add these details?Oded– Oded2010-09-30 19:17:13 +00:00Commented Sep 30, 2010 at 19:17
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what calls this function, and what is the HTML for the form?Incognito– Incognito2010-09-30 19:22:24 +00:00Commented Sep 30, 2010 at 19:22
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3 Answers
You can handle it like so:
The HTML:
<form method='post' action='doesnt_matter'>
<input type='text' name='field1' />
<input type='text' name='field2' />
</form>
The JavaScript:
form = document.forms[0];
function up(d,mul)
{
alert(d);
form[d].value=mul;
}
up('field1','Hello field 1');
up('field2','Hello field 2');
answered Sep 30, 2010 at 19:21
Kristoffer Sall-Storgaard
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Comments
Well you pass d as parameter. So you either have to do (renaming it do fieldname):
function up(fieldname,mul)
{
document.form1[fieldname].value=mul;
}
and calling it with up('d', 'newValue'),
or let d be:
function up(mul)
{
document.form1.d.value=mul;
}
Not sure if you need document but I think you do.
See an example here: http://jsfiddle.net/8uyv8/
Comments
function up(d,mul) { alert(d); form1[d].value=mul; }
You can't use d literally here as it assumes you are looking for an element named "d". So you have to use d in a context where it will use it's value, in this case, an array index.
