Radio button to Prevent to be checked after on click

Question

I am trying to prevent a radio button not to be checked if a false is returned from the onclick. Following is the jsbin link for the code I am using. http://jsbin.com/oruliz/2/

Is there anything I am missing; BTW, I am trying to use JS with no framework.

However, if pure js has this issue is there a workaround for prototyoe.js ?

Answer 1

Try this

function propertyDamageType_click(elem) {
    if(yourconditionfails){ // or if(yourconditionfails && !elem.checked)
       elem.checked = false;
       alert('Please select an incident type');
    }
}

Demo