[英]Shared regex (C# to JS) - Always false - what is wrong here?
I want to use the same regex for server side as client side but when I convert it over to JS it always returns false. 我想在服务器端和客户端使用相同的正则表达式,但是当我将其转换为JS时,它总是返回false。 I think the string literal is causing the issue but I am not seeing where. 我认为字符串文字引起了问题,但我看不到哪里。 I found this but still can't figure it out: Lost in translation - C# regex to JavaScript regex 我发现了这一点,但仍然想不通: 迷失了翻译-C#正则表达式到JavaScript正则表达式
Here is my server-side code: 这是我的服务器端代码:
public static string EmailRegex = @"^[a-zA-Z0-9_\\.-]+@([a-zA-Z0-9-]+\\.)+[a-zA-Z]{2,6}$";
Here is the razor: 这是剃须刀:
<input type="text" id="email" name="email" data-regex="@Model.EmailRegex" />
Here is the rendered HTML: 这是呈现的HTML:
<input type="text" id="email" name="email" data-regex="^[a-zA-Z0-9_\\.-]+@([a-zA-Z0-9-]+\\.)+[a-zA-Z]{2,6}$">
Here is the JS code which gets called on $("#email").keyup(): 这是在$(“#email”)。keyup()上调用的JS代码:
function validateElementRegex(element) {
var regex = $(element).data("regex");
var value = $(element).val();
return validateRegex(value, regex);
}
function validateRegex(value, regex) {
if (typeof(value) === "undefined" || typeof(regex) === "undefined") {
return false;
}
var regexType = typeof(regex); // string e.g. "^[a-zA-Z0-9_\\.-]+@([a-zA-Z0-9-]+\\.)+[a-zA-Z]{2,6}$"
var pattern = new RegExp(regex, "i"); // tried with and without "i" - ignoreCase
var patternType = typeof(pattern); // object
var result = pattern.test(value); // always false
return result;
}
Thanks 谢谢
Oh well you have an extra backslash in your regex: 哦,您的正则表达式中还有一个反斜杠:
^[a-zA-Z0-9_\\.-]+@([a-zA-Z0-9-]+\\.)+[a-zA-Z]{2,6}$
The above regex matches email@myeamil\\.com
上面的正则表达式匹配email@myeamil\\.com
but it does not match email@myeamil.com
但与email@myeamil.com
不匹配
It should be: 它应该是:
^[a-zA-Z0-9_\\.-]+@([a-zA-Z0-9-]+\.)+[a-zA-Z]{2,6}$
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