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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <title>Title</title>
- </head>
- <!-- input
- 获取input里面的输入的内容。
- 修改内容 ："请输入密码"
- -->
- <input id="inp1" type="text" >
- <!-- 按钮-->
- <button id="btn1">修改input内容</button>
- <body>
- </body>
- <script>
- document.getElementById("btn1").onclick = function (){
- //js代码
- //获取
- let inp1 = document.getElementById("inp1");
- //获取属性
- let inp1Value = inp1.value
- console.log(inp1Value)
- //修改
- inp1.value = "请输入密码"
- }
- </script>
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