$('input').attr('tagName') !== 'INPUT'

[[email protected]…]

I can't get the expected tagName of input (IE10, Firefox17, Chrome23, jQuery 1.6.2)

<input type="button" id="testInput" value="click me" onclick="show(this)" />

<script type="text/javascript"> function show(obj){

alert($(obj).attr("tagName"));

} </script>

[dmethvin]

There is no tagName attribute on that element. There is a type, id, value, and onclick attribute. I think you wanted .prop() but ask on the forum.