js -- util

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function urlParamToJson(params) {    var search = params || window.location.search.substring(1);    return search ? JSON.parse('{"' + search.replace(/&/g, '","').replace(/=/g, '":"') + '"}',        function (key, value) {            return key === "" ? value : decodeURIComponent(value)        }) : {}}/** * @desc 获取链接参数的值 * @param  {string} name 参数名字 * @param  {string} [url] 链接url，为空的时候取location.href * @return {string} 参数 */function getQueryString(name, url) {    url = (url == null) ? window.location.href : url;    url = url.split('#')[0];    var reg = new RegExp("(^|\\?|&)" + name + "=([^&]*)(\\s|&|$)", "i");    return reg.test(url) ? RegExp.$2.replace(/\+/g, " ") : '';}function addUrlParam(oriUrl, strParamName, strParamValue) {    var addParam = [strParamName, strParamValue].join('=');    var reg = /(\?|\#)/;    var rule = {        '?': ('?' + addParam + '&'),        '#': ('?' + addParam + '#'),        'default': ('?' + addParam)    };    if (reg.test(oriUrl)) {        return oriUrl.replace(reg, function (m, n) {            return rule[n];        });    }    return oriUrl + rule['default'];}function formatDate(format, timestamp) {    /**     * example 1: date('H:m:s \\m \\i\\s \\m\\o\\n\\t\\h', 1062402400);     * returns 1: '09:09:40 m is month'     * example 2: date('F j, Y, g:i a', 1062462400);     * returns 2: 'September 2, 2003, 2:26 am'     * example 3: date('Y W o', 1062462400);     * returns 3: '2003 36 2003'     * example 4: x = date('Y m d', (new Date()).getTime()/1000);     * example 4: (x+'').length == 10 // 2009 01 09     * returns 4: true     * example 5: date('W', 1104534000);     * returns 5: '53'     * example 6: date('B t', 1104534000);     * returns 6: '999 31'     * example 7: date('W U', 1293750000.82); // 2010-12-31     * returns 7: '52 1293750000'     * example 8: date('W', 1293836400); // 2011-01-01     * returns 8: '52'     * example 9: date('W Y-m-d', 1293974054); // 2011-01-02     * returns 9: '52 2011-01-02'     **/    var that = this;    var jsdate, f;    // Keep this here (works, but for code commented-out below for file size reasons)    // var tal= [];    var txt_words = [        'Sun', 'Mon', 'Tues', 'Wednes', 'Thurs', 'Fri', 'Satur',        'January', 'February', 'March', 'April', 'May', 'June',        'July', 'August', 'September', 'October', 'November', 'December'    ];    // trailing backslash -> (dropped)    // a backslash followed by any character (including backslash) -> the character    // empty string -> empty string    var formatChr = /\\?(.?)/gi;    var formatChrCb = function(t, s) {        return f[t] ? f[t]() : s;    };    var _pad = function(n, c) {        n = String(n);        while (n.length < c) {            n = '0' + n;        }        return n;    };    f = {        // Day        d: function() {            // Day of month w/leading 0; 01..31            return _pad(f.j(), 2);        },        D: function() {            // Shorthand day name; Mon...Sun            return f.l()                .slice(0, 3);        },        j: function() {            // Day of month; 1..31            return jsdate.getDate();        },        l: function() {            // Full day name; Monday...Sunday            return txt_words[f.w()] + 'day';        },        N: function() {            // ISO-8601 day of week; 1[Mon]..7[Sun]            return f.w() || 7;        },        S: function() {            // Ordinal suffix for day of month; st, nd, rd, th            var j = f.j();            var i = j % 10;            if (i <= 3 && parseInt((j % 100) / 10, 10) == 1) {                i = 0;            }            return ['st', 'nd', 'rd'][i - 1] || 'th';        },        w: function() {            // Day of week; 0[Sun]..6[Sat]            return jsdate.getDay();        },        z: function() {            // Day of year; 0..365            var a = new Date(f.Y(), f.n() - 1, f.j());            var b = new Date(f.Y(), 0, 1);            return Math.round((a - b) / 864e5);        },        // Week        W: function() {            // ISO-8601 week number            var a = new Date(f.Y(), f.n() - 1, f.j() - f.N() + 3);            var b = new Date(a.getFullYear(), 0, 4);            return _pad(1 + Math.round((a - b) / 864e5 / 7), 2);        },        // Month        F: function() {            // Full month name; January...December            return txt_words[6 + f.n()];        },        m: function() {            // Month w/leading 0; 01...12            return _pad(f.n(), 2);        },        M: function() {            // Shorthand month name; Jan...Dec            return f.F()                .slice(0, 3);        },        n: function() {            // Month; 1...12            return jsdate.getMonth() + 1;        },        t: function() {            // Days in month; 28...31            return (new Date(f.Y(), f.n(), 0))                .getDate();        },        // Year        L: function() {            // Is leap year?; 0 or 1            var j = f.Y();            return j % 4 === 0 & j % 100 !== 0 | j % 400 === 0;        },        o: function() {            // ISO-8601 year            var n = f.n();            var W = f.W();            var Y = f.Y();            return Y + (n === 12 && W < 9 ? 1 : n === 1 && W > 9 ? -1 : 0);        },        Y: function() {            // Full year; e.g. 1980...2010            return jsdate.getFullYear();        },        y: function() {            // Last two digits of year; 00...99            return f.Y()                .toString()                .slice(-2);        },        // Time        a: function() {            // am or pm            return jsdate.getHours() > 11 ? 'pm' : 'am';        },        A: function() {            // AM or PM            return f.a()                .toUpperCase();        },        B: function() {            // Swatch Internet time; 000..999            var H = jsdate.getUTCHours() * 36e2;            // Hours            var i = jsdate.getUTCMinutes() * 60;            // Minutes            // Seconds            var s = jsdate.getUTCSeconds();            return _pad(Math.floor((H + i + s + 36e2) / 86.4) % 1e3, 3);        },        g: function() {            // 12-Hours; 1..12            return f.G() % 12 || 12;        },        G: function() {            // 24-Hours; 0..23            return jsdate.getHours();        },        h: function() {            // 12-Hours w/leading 0; 01..12            return _pad(f.g(), 2);        },        H: function() {            // 24-Hours w/leading 0; 00..23            return _pad(f.G(), 2);        },        i: function() {            // Minutes w/leading 0; 00..59            return _pad(jsdate.getMinutes(), 2);        },        s: function() {            // Seconds w/leading 0; 00..59            return _pad(jsdate.getSeconds(), 2);        },        u: function() {            // Microseconds; 000000-999000            return _pad(jsdate.getMilliseconds() * 1000, 6);        },        // Timezone        e: function() {            throw 'Not supported (see source code of date() for timezone on how to add support)';        },        I: function() {            // DST observed?; 0 or 1            // Compares Jan 1 minus Jan 1 UTC to Jul 1 minus Jul 1 UTC.            // If they are not equal, then DST is observed.            var a = new Date(f.Y(), 0);            // Jan 1            var c = Date.UTC(f.Y(), 0);            // Jan 1 UTC            var b = new Date(f.Y(), 6);            // Jul 1            // Jul 1 UTC            var d = Date.UTC(f.Y(), 6);            return ((a - c) !== (b - d)) ? 1 : 0;        },        O: function() {            // Difference to GMT in hour format; e.g. +0200            var tzo = jsdate.getTimezoneOffset();            var a = Math.abs(tzo);            return (tzo > 0 ? '-' : '+') + _pad(Math.floor(a / 60) * 100 + a % 60, 4);        },        P: function() {            // Difference to GMT w/colon; e.g. +02:00            var O = f.O();            return (O.substr(0, 3) + ':' + O.substr(3, 2));        },        T: function() {            return 'UTC';        },        Z: function() {            // Timezone offset in seconds (-43200...50400)            return -jsdate.getTimezoneOffset() * 60;        },        // Full Date/Time        c: function() {            // ISO-8601 date.            return 'Y-m-d\\TH:i:sP'.replace(formatChr, formatChrCb);        },        r: function() {            // RFC 2822            return 'D, d M Y H:i:s O'.replace(formatChr, formatChrCb);        },        U: function() {            // Seconds since UNIX epoch            return jsdate / 1000 | 0;        }    };    this.date = function(format, timestamp) {        that = this;        jsdate = (timestamp === undefined ? new Date() : // Not provided                (timestamp instanceof Date) ? new Date(timestamp) : // JS Date()                    new Date(timestamp * 1000) // UNIX timestamp (auto-convert to int)        );        return format.replace(formatChr, formatChrCb);    };    return this.date(format, timestamp);}var base64EncodeChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";function base64encode(url) {    var str = utf16to8(url);    var out, i, len;    var c1, c2, c3;    len = str.length;    i = 0;    out = "";    while(i < len) {        c1 = str.charCodeAt(i++) & 0xff;        if(i == len)        {            out += base64EncodeChars.charAt(c1 >> 2);            out += base64EncodeChars.charAt((c1 & 0x3) << 4);            out += "==";            break;        }        c2 = str.charCodeAt(i++);        if(i == len)        {            out += base64EncodeChars.charAt(c1 >> 2);            out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));            out += base64EncodeChars.charAt((c2 & 0xF) << 2);            out += "=";            break;        }        c3 = str.charCodeAt(i++);        out += base64EncodeChars.charAt(c1 >> 2);        out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));        out += base64EncodeChars.charAt(((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6));        out += base64EncodeChars.charAt(c3 & 0x3F);    }    return out;}function utf16to8(str) {    var out, i, len, c;    out = "";    len = str.length;    for(i = 0; i < len; i++) {        c = str.charCodeAt(i);        if ((c >= 0x0001) && (c <= 0x007F)) {            out += str.charAt(i);        } else if (c > 0x07FF) {            out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));            out += String.fromCharCode(0x80 | ((c >>  6) & 0x3F));            out += String.fromCharCode(0x80 | ((c >>  0) & 0x3F));        } else {            out += String.fromCharCode(0xC0 | ((c >>  6) & 0x1F));            out += String.fromCharCode(0x80 | ((c >>  0) & 0x3F));        }    }    return out;}function handelImgHeight(url, width){  //1图片地址，  2.图片宽度   width不传 直接返回图片高度    var vales = url.match(/-W(\d+)H(\d+)/);    var height = width || 0;    if(vales && vales[2]){        height = vales[2]/vales[1] * (width || vales[1]);        if(height < 0.02){            height = 0.02;        }    }    return height;}// string => queryfunction query(str=''){    let obj = {}    str.split('&').map(item => {        let [key, value] = item.split('=').filter(item => decodeURIComponent(item).trim())        if(key){            obj[key] = value        }    })    return obj}function number_format(n) {//格式化数字    var ns = n.toString();    var mm = ns.match(/\d{1,3}(?=(\d{3})+$)/g);    if (mm == null) return ns;    mm.push(ns.replace(mm.join(""), ""));    return mm.join(",");}
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