jQuery 中的正则表达式字段验证
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Regular expression field validation in jQuery
提问by anand.trex
In jQuery, is there a function/plugin which I can use to match a given regular expression in a string?
在 jQuery 中，是否有一个函数/插件可以用来匹配字符串中的给定正则表达式？
For example, in an email input box, I get an email address, and want to see if it is in the correct format. What jQuery function should I use to see if my validating regular expression matches the input?
例如，在一个电子邮件输入框中，我得到一个电子邮件地址，想看看它的格式是否正确。我应该使用什么 jQuery 函数来查看我的验证正则表达式是否与输入匹配？
I've googled for a solution, but I haven't been able to find anything.
我在谷歌上搜索了一个解决方案，但我找不到任何东西。
采纳答案by Daniel Schaffer
I believe this does it:
我相信这样做：
http://bassistance.de/jquery-plugins/jquery-plugin-validation/
http://bassistance.de/jquery-plugins/jquery-plugin-validation/
It's got built-in patterns for stuff like URLs and e-mail addresses, and I think you can have it use your own as well.
它具有用于 URL 和电子邮件地址等内容的内置模式，我认为您也可以使用自己的模式。
回答by nickf
If you wanted to search some elements based on a regex, you can use the filterfunction. For example, say you wanted to make sure that in all the input boxes, the user has only entered numbers, so let's find all the inputs which don't match and highlight them.
如果您想根据正则表达式搜索某些元素，可以使用该filter函数。例如，假设您想确保在所有输入框中，用户只输入了数字，那么让我们找出所有不匹配的输入并突出显示它们。
$("input:text")
.filter(function() {
return this.value.match(/[^\d]/);
})
.addClass("inputError")
;
Of course if it was just something like this, you could use the form validation plugin, but this method could be applied to any sort of elements you like. Another example to show what I mean: Find all the elements whose idmatches /[a-z]+_\d+/
当然，如果只是这样的话，你可以使用表单验证插件，但是这个方法可以应用于你喜欢的任何类型的元素。另一个例子来说明我的意思：找到所有id匹配的元素/[a-z]+_\d+/
$("[id]").filter(function() {
return this.id.match(/[a-z]+_\d+/);
});
回答by Klatys
I'm using jQuery and JavaScript and it works fine for me:
我正在使用 jQuery 和 JavaScript，它对我来说很好用：
var rege = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
if(rege.test($('#uemail').val())){ //do something }
回答by Hugoware
Unless you're looking for something specific, you can already do Regular Expression matching using regular Javascript with strings.
除非您正在寻找特定的东西，否则您已经可以使用带有字符串的常规 Javascript 进行正则表达式匹配。
For example, you can do matching using a string by something like this...
例如，您可以通过这样的方式使用字符串进行匹配...
var phrase = "This is a phrase";
phrase = phrase.replace(/is/i, "is not");
alert(phrase);
Is there something you're looking for other than just Regular Expression matching in general?
除了一般的正则表达式匹配之外，您还有什么需要寻找的吗？
回答by bilelz
My code :
我的代码：
$("input.numeric").keypress(function(e) { /* pour les champs qui ne prennent que du numeric en entrée */
var key = e.charCode || e.keyCode || 0;
var keychar = String.fromCharCode(key);
/*alert("keychar:"+keychar + " \n charCode:" + e.charCode + " \n key:" +key);*/
if ( ((key == 8 || key == 9 || key == 46 || key == 35 || key == 36 || (key >= 37 && key <= 40)) && e.charCode==0) /* backspace, end, begin, top, bottom, right, left, del, tab */
|| (key >= 48 && key <= 57) ) { /* 0-9 */
return;
} else {
e.preventDefault();
}
});
回答by Har
From jquery.validate.js (by joern), contributed by Scott Gonzalez: http://projects.scottsplayground.com/email_address_validation/
来自 jquery.validate.js（由 joern），由 Scott Gonzalez 提供：http://projects.scottsplayground.com/email_address_validation/
/^((([a-z]|\d|[!#$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/i
Make sure to double up the @@ if you are using MVC Razor:
如果您使用 MVC Razor，请确保将 @@ 加倍：
/^((([a-z]|\d|[!#$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?$/i
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饿了意大利面？
