javascript - 用于验证文本区域输入的正则表达式，该输入必须是由换行符分隔的 URL

Question

我正在尝试创建一个正则表达式，最终将与 Google Forms 一起使用来验证 texarea 输入。

规则是，

• 输入区域可以有一个或多个网址(http 或 https)
• 每个网址必须由一个或多个换行符分隔
• 每一行包含文本，必须是一个有效的 URL
• 最后一个网址后面可能有也可能没有换行符

到目前为止，我已经编写了这个正则表达式 ^(https?://.+[\r\n]+)*(https?://.+[\r\n]+?)$ 但问题是，如果一行有超过 1 个 url，它也会验证。

这是我的测试 field :http://goo.gl/YPdvBH .

Answer 1

这就是您要找的内容

Demo ，Demo with your URLS

    function validate(ele) {
        str = ele.value;
        str = str.replace(/\r/g, "");
        while (/\s\n/.test(str)) {
            str = str.replace(/\s\n/g, "\n");
        }
        while (/\n\n/.test(str)) {
            str = str.replace(/\n\n/g, "\n");
        }
        ele.value = str;

        str = str.replace(/\n/g, "_!_&_!_").split("_!_&_!_")

        var result = [], counter = 0;

        for (var i = 0; i < str.length; i++) {
            str[i] = str[i].replace(/(?:(?:^|\n)\s+|\s+(?:$|\n))/g, '').replace(/\s+/g, ' ');
            if(str[i].length !== 0){
            if (isValidAddress(str[i])) {
                result.push(str[i]);
            }
            counter += 1;
            }
        }

        function isValidAddress(s) {
            return /^(https?|ftp):\/\/(((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:)*@)?(((\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5]))|((([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])))\.?)(:\d*)?)(\/((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)+(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)*)*)?)?(\?((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|[\uE000-\uF8FF]|\/|\?)*)?(\#((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|\/|\?)*)?$/i.test(s)
        }
        return (result.length === str.length);
    }
    var ele = document.getElementById('urls');
    validate(ele);