返回到：Prototype – 表单管理
此方法查找第一个非隐藏、非禁用的表单控件。
语法
form.findFirstElement();
返回值
它返回 HTMLFormElement。
例子
HTML
x
45
45
1
<html>2
<head>3
<title>Prototype examples</title>4
<script type = "text/javascript" src = "/javascript/prototype.js"></script>5
6
<script>7
function showResult() {8
var form = $('example'); 9
var element = form.findFirstElement(); 10
alert("First non hidden element : " + element.inspect() );11
}12
</script>13
</head>14
15
<body>16
<p>Click the button to see the result.</p>17
<br />18
19
<form id = "example" action = "#" onsubmit = "return false">20
<fieldset>21
<legend>User info</legend>22
<div>23
<label for = "username">Username:</label> 24
<input name = "username" id = "username" value = "Sulien" type = "text">25
</div>26
<div>27
<label for = "age">Age:</label> 28
<input name = "age" id = "age" value = "23" size = "3" type = "text">29
</div>30
<div>31
<label for = "hobbies">Your hobbies are:</label>32
<select name = "hobbies" id = "hobbies" multiple = "multiple">33
<option>coding</option>34
<option>swimming</option>35
<option>hiking</option>36
<option>drawing</option>37
</select>38
</div>39
</fieldset>40
</form>41
<br />42
43
<input type = "button" value = "Result" onclick = "showResult();"/>44
</body>45
</html>返回到：Prototype – 表单管理
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作者：terry，如若转载，请注明出处：https://www.web176.com/prototype_api/8523.html
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