JavaScript DOM操作案例封装innerText跟textContent函数(浏览器兼容) 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title></title>
    <style>
        div {
            width: 500px;
            height: 20px;
            border: 2px solid red;
        }
    </style>
</head>
<body>
<input type="button" value="按钮" id="bt"/>

<div id="dv">哇,好棒</div>
<script src="common.js"></script>
<script>
    //设置任意的标签中间的文本内容
    function setInnerText(element, text) {
        //判断浏览器是否支持该属性
        if (typeof element.textContent == "undefined") {
            element.innerText = text;
        } else {
            element.textContent = text;
        }
    }
    //获取任意标签中间的文本内容
    function getInnerText(element) {
        if (typeof element.textContent == "undefined") {
            return element.innerText;
        } else {
            return element.textContent;
        }
    }

    //测试
    //    my$("bt").onclick = function () {
    //      alert(getInnerText(my$("dv")));
    //    };
    my$("bt").onclick = function () {
      setInnerText(my$("dv"), "真的很棒");
    };

</script>
</body>
</html>

 

posted @ 2018-07-23 22:19  {颜逸}  阅读(404)  评论(0)    收藏  举报