sharepoint onload set radio button value using javascript

Imagine you have the following radio buttons:

<input type="radio" name="color" value="pink" /> Pink 
<input type="radio" name="color" value="black" /> Black  

You can select the radio button using the following jQuery code. Insert this code in EditForm.aspx and you're good to go.

<script type="text/javascript" src="http://code.jquery.com/jquery-latest.js"></script>

<script type="text/javascript">

$(document).ready(function()
{
    var presetValue = "black";
    $("[name=color]").filter("[value="+presetValue+"]").prop("checked",true);
});
</script>

Here is the JS only code:

Refer the JS in the EditForm.aspx:

Try this in your myjs.js file:

 var inputs = document.getElementsByTagName("radio");
 var i = 0;
 for (i = 0; i < inputs.length; i++) {
 var input = inputs[i];
 if (input.id.indexOf('color') > -1)     
    document.getElementById('pink').checked = false;
    document.getElementById('black').checked = true;