1. 手机号
let tel = /^1(3[0-9]|4[57]|5[0-35-9]|7[013678]|8[0-9])\d{8}$/;

2. 邮箱
let email = /^[a-zA-Z0-9\-_]+(\.[a-zA-Z0-9\-_]+)*@[a-zA-Z0-9\-_]+(\.[a-zA-Z0-9\-_]+)*(\.[a-zA-Z]+)$/;

3. 身份证
let IDCard = /(^\d{15}$)|(^\d{18}$)|(^\d{17}(\d|X|x)$)/;

4. URL (支持http/https/ftp协议)
let url = /^(?:(?:https?|ftp):\/\/)?(?:\S+(?::\S*)?@)?(?:(?!(?:10|127)(?:\.\d{1,3}){3})(?!(?:169\.254|192\.168)(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z\u00a1-\uffff0-9]-*)*[a-z\u00a1-\uffff0-9]+)(?:\.(?:[a-z\u00a1-\uffff0-9]-*)*[a-z\u00a1-\uffff0-9]+)*(?:\.(?:[a-z\u00a1-\uffff]{2,})))(?::\d{2,5})?(?:\/\S*)?$/i;

5. 汉字
let chinese = /^[\u4e00-\u9fa5]{0,3}$/;  // 0-3个汉字

6. 过滤xss
let outXss = /(<script.*?>.*?(<\/script>)?)|(.*?<\/script>)/i;

7. n位小数
let floatN = /^\d(\.\d{n})$/;

8. 最多n为小数
let floatMostN = /^\d(\.\d{1, n})?$/; 

9. 汉字，数字，字母
let result = /^[\u4e00-\u9fa5a-zA-Z0-9]$/

身份证精确验证

const isIdCard = sId => {
    let iSum = 0;
    const aCity = {
        11: "北京",
        12: "天津",
        13: "河北",
        14: "山西",
        15: "内蒙古",
        21: "辽宁",
        22: "吉林",
        23: "黑龙江",
        31: "上海",
        32: "江苏",
        33: "浙江",
        34: "安徽",
        35: "福建",
        36: "江西",
        37: "山东",
        41: "河南",
        42: "湖北",
        43: "湖南",
        44: "广东",
        45: "广西",
        46: "海南",
        50: "重庆",
        51: "四川",
        52: "贵州",
        53: "云南",
        54: "西藏",
        61: "陕西",
        62: "甘肃",
        63: "青海",
        64: "宁夏",
        65: "新疆",
        71: "台湾",
        81: "香港",
        82: "澳门",
        91: "国外"
    };

    if (!/^\d{17}(\d|x)$/i.test(sId)) {
        return false;
    }

    sId = sId.replace(/x$/i, 'a');

    if (aCity[parseInt(sId.substr(0, 2), 10)] == null) {
        return false;
    }

    let sBirthday = [sId.substr(6, 4), Number(sId.substr(10, 2)), Number(sId.substr(12, 2))].join("/");

    let d = new Date(sBirthday);

    if (sBirthday != [d.getFullYear(), d.getMonth() + 1, d.getDate()].join("/")) {
        return false;
    }

    for (let i = 17; i >= 0; i--) {
        iSum += (Math.pow(2, i) % 11) * parseInt(sId.charAt(17 - i), 11);
    }

    return iSum % 11 == 1;
};

获取URL参数值

getUrlKey = name => {
    return decodeURIComponent((new RegExp('[?|&]' + name + '=' + '([^&;]+?)(&|#|;|$)').exec(location.href) || [, ''])[1].replace(/\+/g, '%20')) || null;
}