jquery: get value of custom attribute
You need some form of iteration here, as val (except when called with a function) only works on the first element:
$("input[placeholder]").val($("input[placeholder]").attr("placeholder"));should be:
$("input[placeholder]").each( function () { $(this).val( $(this).attr("placeholder") );});or
$("input[placeholder]").val(function() { return $(this).attr("placeholder");});
You can also do this by passing function with onclick event
<a onclick="getColor(this);" color="red"><script type="text/javascript">function getColor(el){ color = $(el).attr('color'); alert(color);}</script>