I have try a few examples of enable the submit button when checkbox is selected but i'm getting nowhere. Below is one of my attempts, where the submit button is disabled until the checkbox is selected. Please let me know what am i missing.
function checked(sub1) {
var myLayer = document.getElementById(sub1);
var input = myLayer.childNodes[0];
if (input.checked == true) {
myLayer.disabled = ;
} else {
myLayer.disabled = disabled;
}
}
<p style=color: #FF0000; font-weight: bold;>I have read and agree to the terms and conditions
<input type=checkbox id=termsChkbx onchange=checked('sub1') />
</p>
<p>
<input type=submit name=submit value=Order now! id=sub1 disabled=disabled />
</p>