How to get focus on a particular field on Page Load 1

Guest_imported · Mar 29, 2001

When a page loads ...
How can i get focus on a particular field.(Text box,check box etc.) with the help of JAVASCRIPT.

Thanks in Advance

link9 · Mar 29, 2001

function setFocus(){
document.formName.elementName.focus();
}

<body onLoad="setFocus();">

formName being the name of your form, and elementName being the name of the form element you would like to set the focus to...

http://www.google.com

has it done, and that's where I found it, too.

tsdragon · Mar 29, 2001

You could also use:

Code:

document.forms[0].elements[0].focus();

to set the focus to the first field in the first form, regardless of the form and field names.
Meddle not in the affairs of dragons,
For you are crunchy, and good with mustard.

Guest_imported · Mar 30, 2001

Thanks for such a good response.
You both gave me valuable tips .
and I seek same help in future

jcroft · Dec 26, 2001

Here it is December 2001, and I am grateful for the question and replies from you three waaaaaaayyyyyy back in March...saved my neck, you did...this is a most helpful site and I appreciate it.

JCroft
--only those that do not try, fail--

tsdragon · Dec 27, 2001

Cool. I guess that's why they keep threads around so long.

And it's nice to see SOMEONE search for a relevant thread before they post their question!

Tracy Dryden
tracy@bydisn.com

http://www.bydisn.com

Meddle not in the affairs of dragons,
For you are crunchy, and good with mustard.

Irit · Jun 4, 2002

Hi all and thanks for your mails,
I don't know so much javascript.
Tsdragon, you said I can access the fields of my doc using:
document.forms[0].elements[0].focus(); etc.

Is there a way I can see all the functions/actions I can invoke on a field?
for example, if my form is frm1 and i have a field "num"
I want to write:

function validate_input(int min, int max)
{
if ((frm1.num.value >= min) && (frm1.num.value <= max))
{

// notify user
frm1.num.reset();
}
}

can I do it? what can I write after the frm1.num. ?
how can I reset the field?
how can I notify the user the best way?

thanks in advance for any fiece of information.
Irit.

jemminger · Jun 4, 2002

irit,

you're almost there.

js has loose data typing, so you can't declare your vars as int...though you can name them similarly (intMin, intMax) to keep them straight.

looks like you need to reverse your <= & >= to make your code block execute when the field value is outside your range: if ((frm1.num.value < min) && (frm1.num.value > max))

to reset your field, you can use this:
document.formname.fieldname.value = "";

to notify the user, an alert is probably easiest:
alert("I am alerting you!&quot

;

also, if you want execution of your script to halt after the alert, use "return false;"

here's what your function may look like:

function validate_input(intMin, intMax) {
if ((frm1.num.value < intMin) && (frm1.num.value > intMax)) {
// notify user
alert("Your input is outside the acceptable range.&quot

;
// reset the field
frm1.num.value = "";
// stop execution
return false;
}
}

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How to get focus on a particular field on Page Load 1

Guest_imported

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link9

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tsdragon

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Guest_imported

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jcroft

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tsdragon

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Irit

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jemminger

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