【input】
<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'
src='http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js'></script>
<style type='text/css'>
#myField {
opacity: 0.2;
}
</style>
<script type='text/javascript'>
$(window).load(function(){
$("#myField").focus(function(event){
console.log("focus");
$(this).fadeTo('slow', 3);
});
});
</script>
</head>
<body>
<input type="text" id="myField" value="Here is some">
</body>
</html>
