javascript 有没有办法在没有输入的情况下发送表单值
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Is there a way of sending form values without inputs
提问by einstein
Let say that I have the form below:
假设我有以下表格：
<form action="sendMessage.php" method="post">
<label>Subject</label><input type="text"></input>
<label>Message</label><input type="text"></input>
<input type="submit"></input>
</form>
How can I send an another value like topic(which is pre-defined) without creating an another element for that? Is it possible or do I have to make input element and style it with display: none;
如何在不为此创建另一个元素的情况下发送另一个值，如主题（预定义）？是否有可能或者我必须制作输入元素并使用它的样式display: none;
The answer can contain html, javascript or jquery code.
答案可以包含 html、javascript 或 jquery 代码。
回答by Vivin Paliath
Use a hidden input element:
使用隐藏的输入元素：
<input type = "hidden" name = "topic" value = "something" />
回答by locrizak
use:
利用：
<input type='hidden' name='hidden_value' value='hidden' />In you form you will either have access to $_GET['hidden_value']or $_POST['hidden_value']depending on your form method. The value of the variable will be hidden
在您的表单中，您将可以访问$_GET['hidden_value']或$_POST['hidden_value']取决于您的表单方法。变量的值将是hidden
回答by Jeremy
<input type="hidden" name="topic" value="My Topic" />
回答by Johnny Brown
The way I've usually seen this done is: <input type="hidden" name="field_name" value="myValue" />
我通常看到这样做的方式是： <input type="hidden" name="field_name" value="myValue" />
回答by William
You can optionally use JQuery's ajax method when submitting your form:
提交表单时，您可以选择使用 JQuery 的 ajax 方法：
<form action="process_form">
<button type="submit"></button>
</form>
<script>
$(form).submit(function(){
var formdata = $(this).serialize()+"&var1=12&var2=24";
$.ajax(function(){
url: 'http://example.com/process_form'
data: formdata,
success: function(data){
// do something nice here
}
});
});
</script>
This simply adds your form variables to the form data url string
这只是将您的表单变量添加到表单数据 url 字符串中
