首页 > 代码库 > JS常用工具函数

JS常用工具函数

/** * Created by gaojun-pd on 2016/10/27. */var Util = {    /**     * 1、判断非空     * 2、获取字符串真实长度 汉字算两位     * 3、判断参数类型     * 4、日期格式化     * 5、通过key获取url中的参数值     * 6、设置cookie值     * 7、获取cookie值     * 8、删除cookie     * 9、HTML编码     * 10、HTML解码     * 11、光标停在文字的后面,文本框获得焦点时调用     * 12、生成一个新的GUID     */    /**     * 判断非空     * @param obj     * @returns {boolean}     */    isEmpty: function (obj) {        if (obj == undefined || obj == null || new String(obj).trim() == ‘‘) {            return true;        } else {            return false;        }    },    /**     * 获取字符串真实长度 汉字算两位     * @param str     * @returns {number}     */    getRealLength: function (str) {        return isEmpty(str) ? 0 : str.replace(/[^\x00-\xff]/g, "**").length;    },    /**     * 判断参数类型     * @param obj     * @returns {string}     */    type: function (obj) {        var class2type = {},            toString = Object.prototype.toString;        (function () {            var typeArr = "Boolean,Number,String,Function,Array,Date,RegExp,Object".split(",");            for (var i = 0; i < typeArr.length; i++) {                var name = typeArr[i];                class2type["[object " + name + "]"] = name.toLowerCase();            }        })()        return obj == null ? String(obj) : class2type[toString.call(obj)] || "object";    },    /**     * 日期格式化     * @param date 日期对象     * @param formatStr 格式化字符串 如YYYY-MM-dd hh:mm:ss     * @returns {*}     */    dateFormat: function (date, formatStr) {        var str = formatStr;        var Week = [‘日‘, ‘一‘, ‘二‘, ‘三‘, ‘四‘, ‘五‘, ‘六‘];        str = str.replace(/yyyy|YYYY/, this.getFullYear());        str = str.replace(/yy|YY/, (this.getYear() % 100) > 9 ? (this.getYear() % 100).toString() : ‘0‘ + (this.getYear() % 100));        str = str.replace(/MM/, (this.getMonth() + 1) > 9 ? (this.getMonth() + 1).toString() : ‘0‘ + (this.getMonth() + 1));        str = str.replace(/M/g, (this.getMonth() + 1));        str = str.replace(/w|W/g, Week[this.getDay()]);        str = str.replace(/dd|DD/, this.getDate() > 9 ? this.getDate().toString() : ‘0‘ + this.getDate());        str = str.replace(/d|D/g, this.getDate());        str = str.replace(/hh|HH/, this.getHours() > 9 ? this.getHours().toString() : ‘0‘ + this.getHours());        str = str.replace(/h|H/g, this.getHours());        str = str.replace(/mm/, this.getMinutes() > 9 ? this.getMinutes().toString() : ‘0‘ + this.getMinutes());        str = str.replace(/m/g, this.getMinutes());        str = str.replace(/ss|SS/, this.getSeconds() > 9 ? this.getSeconds().toString() : ‘0‘ + this.getSeconds());        str = str.replace(/s|S/g, this.getSeconds());        return str    },    /**     * 通过key获取url中的参数值     * @param key     * @returns {null}     */    getQueryString: function (key) {        var reg = new RegExp("(^|&)" + key + "=([^&]*)(&|$)", "i");        var r = window.location.search.substr(1).match(reg);        if (r != null) return decodeURIComponent(r[2]);        return null;    },    /**     * 设置cookie值     * @param name 名称     * @param value 名称对应值     * @param Hours 过期时间     */    setCookie: function (name, value, Hours) {        var d = new Date();        var offset = 8;        var utc = d.getTime() + (d.getTimezoneOffset() * 60000);        var nd = utc + (3600000 * offset);        var exp = new Date(nd);        exp.setTime(exp.getTime() + Hours * 60 * 60 * 1000);        document.cookie = name + "=" + encodeURIComponent(value) + ";path=/;expires=" + exp.toGMTString() + ";domain=sicd.com;";    },    /**     * 获取cookie值     * @param name cookie名     * @returns {*}     */    getCookie: function (name) {        var arr = document.cookie            .match(new RegExp("(^| )" + name + "=([^;]*)(;|$)"));        if (arr != null)            return decodeURIComponent(arr[2]);        return null;    },    /**     * 删除cookie     * @param name cookie name     */    delCookie: function (name) {        var exp = new Date();        exp.setTime(exp.getTime() - 1);        var cval = getCookie(name);        if (cval != null)            document.cookie = name + "=" + cval + ";expires=" + exp.toGMTString();    },    /**     * HTML编码     * @param str 待编码字符串     * @returns {string}     */    html_encode: function (str) {        var s = "";        if (str.length == 0) return "";        s = str.replace(/&/g, ">");        s = s.replace(/</g, "<");        s = s.replace(/>/g, ">");        s = s.replace(/ /g, " ");        s = s.replace(/\‘/g, "‘");        s = s.replace(/\"/g, """);        s = s.replace(/\n/g, "<br>");        return s;    },    /**     * HTML解码     * @param str 待解码的字符串     * @returns {string}     */    html_decode: function (str) {        var s = "";        if (str.length == 0) return "";        s = str.replace(/>/g, "&");        s = s.replace(/</g, "<");        s = s.replace(/>/g, ">");        s = s.replace(/ /g, " ");        s = s.replace(/‘/g, "\‘");        s = s.replace(/"/g, "\"");        s = s.replace(/<br>/g, "\n");        return s;    },    /**     * 光标停在文字的后面,文本框获得焦点时调用     */    focusLast: function () {        var e = event.srcElement;        var r = e.createTextRange();        r.moveStart(‘character‘, e.value.length);        r.collapse(true);        r.select();    },    /**     * 生成一个新的GUID     * @return {string} 数据类型     * @method nuid     */    nuid: function () {        return new Date().getTime().toString(36);    }}

  

JS常用工具函数