JavaScript三种方式改变标签css

原文地址：https://www.cnblogs.com/xiangru0921/p/6514225.html
<body>
        <div id="div">这是一个盒子</div>
        <script type="text/javascript">
            var div = document.getElementById("div");
            
            //第一种:用cssText
            div.style.cssText='600px;height:250px;border:1px red solid;text-align: center;line-height: 250px;';
            
            //第二种：用setProperty()
            div.style.setProperty('width','700px');
            div.style.setProperty('height','300px');
            div.style.setProperty('line-height','300px');
            div.style.setProperty('background','#f00');
            div.style.setProperty('color','#fff');
            div.style.setProperty('border','1px solid blue');
            div.style.setProperty('text-align','center');
            
            //第三种：使用css属性对应的style属性
            div.style.width = "800px";
            div.style.height = "250px"; 
            div.style.lineHeight = "250px"; 
            div.style.background = "#000";
            div.style.color = "#fff";
            div.style.border = "1px solid #111";
            div.style.textAlign = "center";
        </script>
    </body>