• JavaScript如何获得input元素value的值


    在JavaScript中获取input元素value的值:

    方法一:

     1 <!DOCTYPE html>
     2 <html>
     3 <head>
     4     <meta charset="utf-8">
     5     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     6     <title>JavaScript中获取input元素value值</title>
     7     <link rel="stylesheet" href="">
     8     <script>
     9         function printInputValue() {
    10             var inputValue = document.getElementById("demo1").value;
    11             console.log(inputValue);
    12             document.getElementById("demo2").innerHTML = inputValue;
    13         }
    14     </script>
    15 </head>
    16 <body>
    17     <input type="text" id="demo1">
    18     <button onclick="printInputValue()">获取input元素value值</button>
    19     <p id="demo2"></p>
    20 </body>
    21 </html>
    View Code

    方法二:

     1 <!DOCTYPE html>
     2 <html>
     3 <head>
     4     <meta charset="utf-8">
     5     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     6     <title>JavaScript34</title>
     7     <link rel="stylesheet" href="">
     8     <script>
     9         function print(){
    10             var a = myform.name.value;
    11             alert(a);
    12             document.getElementsByName("span")[0].innerHTML = a;
    13         }
    14     </script>
    15 </head>
    16 <body>
    17     <form name="myform">
    18         <input type="text" name="name" id="nn">
    19         <input type="button" name="button" value="测试" onclick="print()">
    20         <span name="span"></span>
    21     </form>
    22 </body>
    23 </html>
    View Code
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  • 原文地址:https://www.cnblogs.com/alsodzy/p/7820996.html
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