如何从javascript设置html表单的属性

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..

Answer 1

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