how to set attribute of html form from javascript

Question

i want to change the attribute of a text element from required to not required. I am using javascript to do this. i am calling a function based on the input of the radio button and i am using html 5..

@MihaiIorga i was validation the form elements before clicking submit button. bcoz there was a property in the html5 called required. — SHiv
– SHiv, Commented Aug 21, 2012 at 10:26

Lemex · Accepted Answer · 2012-08-21 10:13:52Z

4

document.getElementById("adiv").removeAttribute("style")

document.getElementById("myimage").setAttribute("src","another.gif")

var getvalue=document.getElementById("myimage").getAttribute("src")

Now but it in a function and use it how you wish.

That is how you get set and remove attributes in JavaScript.

Source: http://www.javascriptkit.com/dhtmltutors/domattribute.shtml

answered Aug 21, 2012 at 10:13

Lemex

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3 Comments

SHiv Over a year ago

i tried this code document.getElementsByName("twelthPercentage").setAttribute("required"); but i didn't work can u tell me why

Lemex Over a year ago

document.getElementsByName("twelthPercentage").setAttribute("required","true") maybe? please create a JS fiddle with issues or read teh documentation

Jukka K. Korpela Over a year ago

@Sivashankar, you probably need to use getElementById not getElementsByName. If problems continue, please post sufficient part of the code.

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