function.js

/**
 * 延迟执行函数 截流函数
 * @param  {[type]} func  [description]
 * @param  {[type]} delay [description]
 * @return {[type]}       [description]
 */
function debounce(func, delay) {
    let timer;

    return function (...args){
        if (timer) {
            clearTimeout(timer);
        }
        timer = setTimeout(() => {
            func.apply(this, args);
        }, delay)
    }
}

/**
 * 转义html标签
 * @param text
 * @returns {string|XML}
 * @constructor
 */
function HtmlEncode(text) {
    return text.replace(/&/g, '&').replace(/\"/g, '"').replace(/</g, '<').replace(/>/g, '>');
}

/**
 * 加入收藏夹
 * @param sURL
 * @param sTitle
 */
function addFavorite(sURL, sTitle) {
    try {
        window.external.addFavorite(sURL, sTitle)
    } catch(e) {
        try {
            window.sidebar.addPanel(sTitle, sURL, "")
        } catch(e) {
            alert("加入收藏失败，请使用Ctrl+D进行添加")
        }
    }
}

/**
 * 动态加载图片
 * @param path
 * @param callback
 */
function loadImage(path, callback){
    var img = new Image();
    img.src = path;
    img.onload = function() {
        img.onload = null;
        callback(path);
    };
}

/**
 * 动态加载js
 * @param url
 * @param callback
 */
function loadJS(url, callback) {
    var script = document.createElement('script');
    script.type = "text/javascript";
    if (script.readyState) {
        script.onreadystatechange = function() {
            if (script.readyState == "loaded" || script.readyState == "complete") {
                script.onreadystatechange = null;
                if (callback) {
                    callback()
                }
            }
        }
    } else {
        script.onload = function() {
            if (callback) {
                callback()
            }
        }
    }
    script.src = url;
    document.body.appendChild(script);
}

/**
 * 返回顶部
 * @param btnId
 */
function backTop(btnId) {
    var btn = document.getElementById(btnId);
    var d = document.documentElement;
    var b = document.body;
    window.onscroll = set;
    btn.style.display = "none";
    btn.onclick = function() {
        btn.style.display = "none";
        window.onscroll = null;
        this.timer = setInterval(function() {
            d.scrollTop -= Math.ceil((d.scrollTop + b.scrollTop) * 0.1);
            b.scrollTop -= Math.ceil((d.scrollTop + b.scrollTop) * 0.1);
            if ((d.scrollTop + b.scrollTop) == 0) clearInterval(btn.timer, window.onscroll = set);
        }, 10);
    };
    function set() {
        btn.style.display = (d.scrollTop + b.scrollTop > 100) ? 'block': "none"
    }
}

/**
 * 获取当前路径
 * @param url
 * @returns {{source: *, protocol, host: string, port: (*|Function|string), query: (*|string), params, file: *, hash, path: string, relative: *, segments: Array}}
 */
function parseURL(url) {
    var a =  document.createElement('a');
    a.href = url;
    return {
        source: url,
        protocol: a.protocol.replace(':',''),
        host: a.hostname,
        port: a.port,
        query: a.search,
        params: (function(){
            var ret = {},
                seg = a.search.replace(/^\?/,'').split('&'),
                len = seg.length, i = 0, s;
            for (;i<len;i++) {
                if (!seg[i]) { continue; }
                s = seg[i].split('=');
                ret[s[0]] = s[1];
            }
            return ret;
        })(),
        file: (a.pathname.match(/\/([^\/?#]+)$/i) || [,''])[1],
        hash: a.hash.replace('#',''),
        path: a.pathname.replace(/^([^\/])/,'/$1'),
        relative: (a.href.match(/tps?:\/\/[^\/]+(.+)/) || [,''])[1],
        segments: a.pathname.replace(/^\//,'').split('/')
    };
}

/**
 * 字符串长度截取
 * @param str
 * @param len
 * @returns {string}
 */
function cutstr(str, len) {
    var temp,
        icount = 0,
        patrn = /[^\x00-\xff]/，
        strre = "";
    for (var i = 0; i < str.length; i++) {
        if (icount < len - 1) {
            temp = str.substr(i, 1);
            if (patrn.exec(temp) == null) {
                icount = icount + 1
            } else {
                icount = icount + 2
            }
            strre += temp
        } else {
            break;
        }
    }
    return strre + "..."
}


/**
 * 时间日期格式化
 * @param format
 * @returns {*}
 */
Date.prototype.format = function(format){
    var o = {
        "M+" : this.getMonth()+1, //month
        "d+" : this.getDate(),    //day
        "h+" : this.getHours(),   //hour
        "m+" : this.getMinutes(), //minute
        "s+" : this.getSeconds(), //second
        "q+" : Math.floor((this.getMonth()+3)/3),  //quarter
        "S" : this.getMilliseconds() //millisecond
    };
    if(/(y+)/.test(format)) format=format.replace(RegExp.$1,
        (this.getFullYear()+"").substr(4 - RegExp.$1.length));
    for(var k in o){
        if(new RegExp("("+ k +")").test(format))
            format = format.replace(RegExp.$1,RegExp.$1.length==1 ? o[k] :("00"+ o[k]).substr((""+ o[k]).length));
    }
    return format;
};
console.log(new Date().format("yyyy-MM-dd hh:mm:ss"));