jQuery验证器仅允许点（。）和数字 [英] jQuery validator allow dot (.) and numbers only

问题描述

我有一个输入，用户可以投标金额。



目前它允许用户输入数字而不是点分隔符。



这是我的jQuery代码：

Hi,

I have an input where users can bid an amount of money.

currently it allows the user to enter numbers but not a dot seperator.

This is my jQuery code:

$().ready(function() {
	//validate register form on keyup and submit
	$("#postItem").validate({
		rules:{
			itemName:{
				required: true,
				minlength: 5
			},
			itemDesc:{
				required: true,
				minlength: 30
			},
			startBid: {
				required: true,
				digits: true
			},
		},
		messages: {
			itemName: {
				required: "Please provide a name for your item",
				minlength: "The item name must be longer than 4 characters<br>"
			},
			itemDesc:{
				required: "You need to provide a description of your item",
				minlength: "The description needs to be more than 30 characters<br>"
			},
			startBid:{
				required: "A starting bid amount is required",
				digits: "Only numerical values allowed"
			},
		},
	});

});

我可以使用除数字以外的规则吗？

Is there a rule other than digits that I can use?

推荐答案

（）。ready（ function （）{
// 验证密钥上的注册表并提交

().ready(function() { //validate register form on keyup and submit

（ ＃postItem）。validate（{
rules：{
itemName：{
required： true ，
minlength： 5
}，
itemDesc：{
required： true ，
minlength： 30
}，
startBid：{
required： true ，
位数： true
}，
}，
消息：{
itemName：{
required： 请提供项目名称，
minlength： 项目名称必须超过4个字符< br>
}，
itemDesc：{
required： 您需要提供项目的描述，
minlength： 描述需要超过30个字符< br>
}，
startBid：{
required： 起始出价金额为，
digits： 只允许数值
}，
}，
}）;

}）;

("#postItem").validate({ rules:{ itemName:{ required: true, minlength: 5 }, itemDesc:{ required: true, minlength: 30 }, startBid: { required: true, digits: true }, }, messages: { itemName: { required: "Please provide a name for your item", minlength: "The item name must be longer than 4 characters<br>" }, itemDesc:{ required: "You need to provide a description of your item", minlength: "The description needs to be more than 30 characters<br>" }, startBid:{ required: "A starting bid amount is required", digits: "Only numerical values allowed" }, }, }); });

我可以使用除数字以外的规则吗？

Is there a rule other than digits that I can use?

请看到我对这个问题的评论。您可以简单地过滤掉不需要的字符，并允许您想要的任何内容，而不是验证。这个简短的教程解释了所有内容： http://www.javascripter.net/faq/keyboardinputfiltering.htm 。 />






您可以处理任何字符和/或按键。

有一些额外的字符或键来检查？去做就对了。如果您不想使用正则表达式，请在单独的表达式中计算它并将它放在if下的布尔表达式中。



Dot is ：

Please see my comments to the question. Instead of validation, you can simply filter out the unwanted characters and allow whatever you want. This short tutorial explains everything: http://www.javascripter.net/faq/keyboardinputfiltering.htm.



You can handle any characters and/or key presses.
Having some additional characters or keys to check up? Just do it. If you don't want to mess with Regular Expression, calculate it in a separate expression and put it together in a Boolean expression under your "if".

Dot is:

For keypress: event.charCode == 46; event.which == 46;
For keyup: event.keyCode == 190; event.which == 190;

您还应该确保允许退格：

You also should make sure you allow backspace:

For keypress: event.keyCode == 8; event.which == 8;
For keyup: event.keyCode == 8; event.which == 8;

不是 event.keyCode 和 event.charCode 是不同的东西。并非所有的键都有与之相关的字符。



如何知道所有这些事实？使用此测试页： http://www.asquare.net/javascript/tests/KeyCode.html 。

-SA

Not that event.keyCode and event.charCode are different things. Not all keys have characters associated with them.

How to know all these facts? Use this test page: http://www.asquare.net/javascript/tests/KeyCode.html.

—SA

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