javascript check radio buttons automatically

Question

I wanna check radio buttons automatically: I tried this code but it does not work: Radio buttons have 3 different values, I wanna select the radio button with value \'clean\

Answer 1

Give your radio buttons "names" would make things a lot easier

var elements = document.getElementsByName('myradios');
for (i=0;i

Working example : http://jsfiddle.net/Dwzc9/

Updated

getElementsByName doesn't seem to be supported in all IE versions ... so you could use the following based on your original example :

var allElems = document.getElementsByTagName('input');
for (i = 0; i < allElems.length; i++) {
    if (allElems[i].type == 'radio' && allElems[i].value == 'clean') {
        allElems[i].checked = true;
    }
}

Working example : http://jsfiddle.net/Dwzc9/2/