Need help with OnClick

onclick="trn.value='<?=$var?>'"


it fills a textbox with the $var value, which is a number. The box should only hold a max of 99,999, therefore if $var is bigger than 99,999,
10,000,000 for example it would only put 99999 in the box. Can that be done somehow?

 

make one js function for validation .. and call it on key press or value change

 

I'm a noob when it comes to js. But I can do it in PHP and assign the value to a new variable - not a bad idea at all.

 

So, u still need a help for the JS or not?

 

Does it helps:

<input type="text" id="number"><br>
<input type="text" id="number2"><br>
<a href="#" onClick="if(document.getElementById('number').value > 999999){alert('BIG NUMBER!');}else{document.getElementById('number2').value=document.getElementById('number').value;}">CLICK ME</a>

Code (markup):

 

I think you got the wrong idea, but it is still helpful.

$var = 10000;

I do click on a button that has the onclick property and it inserts $var to a textbox


<input type="text" name="trn"/>

<input value="*" onclick="trn.value='<?=$var?>'" type="button">

But what I want to do is when $var exceeds 99999, it should only insert 99999 to the textbox, not a bigger number.


So, if $var = 213453642145424;

onclick will just insert 99999 to the textbox, and if it's smaller it enters the actual number.

 

Try this:

<input type="text" id="number"><br>
<input type="text" id="number2"><br>
<a href="#" onClick="if(document.getElementById('number').value.length > 5){document.getElementById('number2').value = document.getElementById('number').value.substring(0, 5);}else{document.getElementById('number2').value=document.getElementById('number').value;}">CLICK ME</a>

Code (markup):