JS Regex网址验证 [英] JS Regex url validation

问题描述

无论我执行了什么操作，该函数都返回false，我都尝试使用或不使用http来验证url. 我在此网站上检查了我的正则表达式字符串: http://regexr.com/ 和我期望的一样.

I tried to validate url with or without http No matter what i did the function return false. I checked my regex string in this site: http://regexr.com/ And its seen as i expect.

    function isUrlValid(userInput) {
        var regexQuery = "/(http(s)?://.)?(www\.)?[-a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)/";
        var url = new RegExp(regexQuery,"g");
        if (url.test(userInput)) {
            alert('Great, you entered an E-Mail-address');
            return true;
        }
        return false;
    }

我通过将.test更改为.match并保留正则表达式来解决该问题.

I fix the problem by change the .test to .match and leave the regex as is.

推荐答案

我将功能更改为Match +，并在此处使用斜杠及其工作进行更改:(http(s)?://.)

I change the function to Match + make a change here with the slashes and its work: (http(s)?://.)

固定功能:

function isUrlValid(userInput) {
    var res = userInput.match(/(http(s)?:\/\/.)?(www\.)?[-a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)/g);
    if(res == null)
        return false;
    else
        return true;
}

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