JQuery中获取表中的数据

获取表单中的全部数据

获取表单中的全部数据，以json字符串的方式展现

大家也可以看一下官方的Demo；

大概意思是：要使表单元素的值包含在序列化字符串中，该元素必须具有name属性，不管是

.serialize()还是.serializeArray()方法，最好有name属性

.serialize()：官方Demo

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>serialize demo</title>
  <style>
  body, select {
    font-size: 12px;
  }
  form {
    margin: 5px;
  }
  p {
    color: red;
    margin: 5px;
    font-size: 14px;
  }
  b {
    color: blue;
  }
  </style>
  <script src="https://code.jquery.com/jquery-3.5.0.js"></script>
</head>
<body>
 
<form>
  <select name="single">
    <option>Single</option>
    <option>Single2</option>
  </select>
 
  <br>
  <select name="multiple" multiple="multiple">
    <option selected="selected">Multiple</option>
    <option>Multiple2</option>
    <option selected="selected">Multiple3</option>
  </select>
 
  <br>
  <input type="checkbox" name="check" value="check1" id="ch1">
  <label for="ch1">check1</label>
  <input type="checkbox" name="check" value="check2" checked="checked" id="ch2">
  <label for="ch2">check2</label>
 
  <br>
  <input type="radio" name="radio" value="radio1" checked="checked" id="r1">
  <label for="r1">radio1</label>
  <input type="radio" name="radio" value="radio2" id="r2">
  <label for="r2">radio2</label>
</form>
 
<p><tt id="results"></tt></p>
 
<script>
  function showValues() {
    var str = $( "form" ).serialize();
    $( "#results" ).text( str );
  }
  $( "input[type='checkbox'], input[type='radio']" ).on( "click", showValues );
  $( "select" ).on( "change", showValues );
  showValues();
</script>
 
</body>
</html>

.serializeArray()：官方Demo

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>serializeArray demo</title>
  <style>
  body, select {
    font-size: 14px;
  }
  form {
    margin: 5px;
  }
  p {
    color: red;
    margin: 5px;
  }
  b {
    color: blue;
  }
  </style>
  <script src="https://code.jquery.com/jquery-3.5.0.js"></script>
</head>
<body>
 
<p><b>Results:</b> <span id="results"></span></p>
<form>
  <select name="single">
    <option>Single</option>
    <option>Single2</option>
  </select>
  <select name="multiple" multiple="multiple">
    <option selected="selected">Multiple</option>
    <option>Multiple2</option>
    <option selected="selected">Multiple3</option>
  </select>
  <br>
  <input type="checkbox" name="check" value="check1" id="ch1">
  <label for="ch1">check1</label>
  <input type="checkbox" name="check" value="check2" checked="checked" id="ch2">
  <label for="ch2">check2</label>
  <input type="radio" name="radio" value="radio1" checked="checked" id="r1">
  <label for="r1">radio1</label>
  <input type="radio" name="radio" value="radio2" id="r2">
  <label for="r2">radio2</label>
</form>
 
<script>
  function showValues() {
    var fields = $( ":input" ).serializeArray();
    $( "#results" ).empty();
    jQuery.each( fields, function( i, field ) {
      $( "#results" ).append( field.value + " " );
    });
  }
 
  $( ":checkbox, :radio" ).click( showValues );
  $( "select" ).change( showValues );
  showValues();
</script>
 
</body>
</html>

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原文地址：https://www.cnblogs.com/Devin-d/p/13156479.html