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number/text validation in javascript

Copy linkTweet thisAlerts:
Feb 14.2008

Hi,
I’ve created a text box. I want that, if any any one type less then 7 character/numbers, then an alert box will be appeared-“Incorrect Number”. For that, I type these codes:
<form name=f1, action=”” value=post>
<input type =textbox, name=t1 onSubmit= “return val(true)”>
</form>

function vai(){
if(f1.t1.value.length < 7){
alert(“Incorrect Number”);
return false;
}
}

But, it’s not working. also no error are showing.
So, what’s wrong?

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JavaScript

1 Comments(s) ↴

Copy linkTweet thisAlerts:
@KorFeb 14.2008 — [B]onsubmit[/B] belongs to the [B]form[/B] element, not to the input element. And: all the elements belong to the [B]document [/B]object. Also, be consistent and nest all the attributes value inside double quotes
<i>
</i>&lt;form name=[COLOR="Blue"]"[/COLOR]f1[COLOR="Blue"]"[/COLOR], action="" value=[COLOR="Blue"]"[/COLOR]post[COLOR="Blue"]"[/COLOR] [COLOR="Blue"]onsubmit="return val()"[/COLOR]&gt;
...

<i>
</i>function vai(){
if([COLOR="Blue"]document[/COLOR].f1.t1.value.length &lt; 7){
alert("Incorrect Number");
return false;
}
}
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