使用 jQuery 的“.val()"设置表单中隐藏字段的值不工作 [英] Set value of hidden field in a form using jQuery's ".val()" doesn't work
问题描述
我一直在尝试使用 jQuery 在表单中设置隐藏字段的值，但没有成功.
I've been trying to set the value of a hidden field in a form using jQuery, but without success.
这是一个解释问题的示例代码.如果我将输入类型保持为文本"，它可以毫无问题地工作.但是，将输入类型更改为隐藏"，不起作用！
Here is a sample code that explains the problem. If I keep the input type to "text", it works without any trouble. But, changing the input type to "hidden", doesn't work !
<html>
<head>
<script type="text/javascript" src="jquery.js">
</script>
<script type="text/javascript">
$(document).ready(function() {
$("button").click(function() {
$("input:text#texens").val("tinkumaster");
});
});
</script>
</head>
<body>
<p>
Name:
<input type="hidden" id="texens" name="user" value="texens" />
</p>
<button>
Change value for the text field
</button>
</body>
</html>
我还尝试了以下解决方法，将输入类型设置为文本"，然后对输入框使用显示:无"样式.但是，这也失败了！似乎 jQuery 在设置隐藏或不可见的输入字段时遇到了一些问题.
I also tried the following workaround, by setting the input type to "text" and then using a "display:none" style for the input box. But, this also fails ! It seems jQuery has some trouble setting hidden or invisible input fields.
有什么想法吗?是否有实际可行的解决方法?
Any ideas? Is there a workaround for this that actually works?
推荐答案
:text 对于类型值为 hidden 的输入将失败.使用起来也更有效率:
:text will fail for a input with a type value of hidden. It's also much more efficient to just use:
$("#texens").val("tinkumaster");
ID 属性在网页上应该是唯一的，请确保您的 ID 属性是唯一的，因为这可能会导致您遇到任何问题，并且指定更复杂的选择器只会减慢速度并且看起来不那么整洁.
ID attributes should be unique on a web page, make sure yours are as this may contribute to any problems you're having, and specifying a more complicated selector just slows things down and doesn't look as neat.
http://jsbin.com/elovo/edit 中的示例，使用您在 http://jsbin.com/elovo/2/edit
Example at http://jsbin.com/elovo/edit, using your example code at http://jsbin.com/elovo/2/edit
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