【table】
<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'>
window.onload=function(){
var table, inputs, arr;
table = document.getElementById( 'test' );
inputs = table.querySelectorAll( 'input' );
arr = [].slice.call( inputs ).map(function ( node ) {
return node.id;
});
console.log( arr );
}
</script>
</head>
<body>
<table id="test">
<tr>
<td><input id="foo"></td>
<td><input id="bar"></td>
<td><input id="baz"></td>
</tr>
</table>
</body>
</html>
