jQuery方法示例 - 通过css('background-color')方法检查背景色
<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'
src='http://code.jquery.com/jquery-1.8.3.js'></script>
<script type='text/javascript'>
$(window).load(function(){
$("#rect").click(function() {
var $this = $(this);
console.log($this.css('background-color'))
if ($this.css('background-color') == 'rgb(255, 0, 0)') {
$this.css('background-color', 'blue');
}
else {
$this.css('background-color', 'yellow');
}
});
});
</script>
</head>
<body>
<div id="rect" style="height: 100px; width: 300px; background: red">
</div>
</body>
</html>