javascript 没有表单需要 html5 输入类型。它有效吗？
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html5 input type required without a form. Does it work?
提问by Zo72
I want to use: HTML 5 Required.
我想使用：HTML 5 必需。
such as
如
<input type='text' required>
it only seems to work if the input type is in a form. Can I not use it on its own and then by javascript call some sort of validate first method ?
它似乎只有在输入类型是表单时才有效。我不能单独使用它，然后通过 javascript 调用某种验证第一个方法吗？
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I have
我有
<input id='name' type='text' required>
<input id='surname' type='text' required>
<input id='send' type='button' onclick ='send()'>
function send() {
if (document.getElementById('name').value == '') { alert('missing name'); return }
if (document.getElementById('surname').value == '') { alert('missing surname'); return }
// logic now...
}
The bit where it checks the input params and sends alert that's the bit I would like to change by using HTML 5
它检查输入参数并发送警报的位，这是我想使用 HTML 5 更改的位
采纳答案by RReverser
Sure, use
当然，使用
document.getElementById('your_input_id').validity.valid
to check validity of field dynamically.
动态检查字段的有效性。
回答by YuS
First, the "required" attribute will fire on "submit" event, so, I guess, no form — nothing will be submitted. Second, why there is the problem with form?
首先，“required”属性将在“submit”事件上触发，所以，我猜，没有表单——什么都不会提交。二、为什么会出现形式问题？
回答by Riz
With 'required', this should work only if form is submitted.
使用“必需”，这应该仅在提交表单时才有效。
