javaweb/javascript/js_DOM_get_element/js_DOM_get_element.html at master · CPU-Code/javaweb · GitHub

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<!--
 * @由于个人水平有限, 难免有些错误, 还请指点:
 * @Author: cpu_code
 * @Date: 2020-10-18 21:13:12
 * @LastEditTime: 2020-10-18 21:19:47
 * @FilePath: \web\javascript\js_DOM_get_element\js_DOM_get_element.html
 * @Gitee: [https://gitee.com/cpu_code](https://gitee.com/cpu_code)
 * @Github: [https://github.com/CPU-Code](https://github.com/CPU-Code)
 * @CSDN: [https://blog.csdn.net/qq_44226094](https://blog.csdn.net/qq_44226094)
 * @Gitbook: [https://923992029.gitbook.io/cpucode/](https://923992029.gitbook.io/cpucode/)
-->
<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title>获取元素对象</title>
    </head>

    <body>
        <img id="light" src="image/off.gif">
        <h1 id="title">cpucode流弊</h1>

        <script>
            //通过id获取元素对象
            var light = document.getElementById("light");
            alert("换图片");
            light.src = "image/on.gif";

            //1.获取h1标签对象
            var title = document.getElementById("title");
            alert("换内容了");
            //2.修改内容
            title.innerHTML = "嘿嘿 cpucode";
        </script>
    </body>
</html>