JavaScript

indexOfSymbol.js

/**
 * 返回字符串对象中特殊符号的位置
 * 不存在返回 -1
 */
String.prototype.indexOfSymbol = function () {
    return this.search(/[^a-zA-Z0-9\u2E80-\u9FFF]+/);
}

Iterator.js

function Iterator(start, end)
{
    this.range = [];
    for (var i = start; i <= end; i++) {
        this.range.push(i);
    };
    console.log(this.range);
    this.start = start;
    this.end = end;

    this.p = 0;
    this.value = this.range[this.p];
    this.done = false;
}
Iterator.prototype.next = function(){
    this.p++;
    this.value = this.range[this.p];
    if (this.range[this.p] == undefined) {
        this.done = true;
    }
}
for (var iter = new Iterator(1, 10); !iter.done; iter.next()) {
    console.log(iter.value, iter.done);
}

JavaScript template engine in just 20 lines.js

var TemplateEngine = function(html, options) {
    var re = /<%([^%>]+)?%>/g, reExp = /(^( )?(if|for|else|switch|case|break|{|}))(.*)?/g, code = 'var r=[];\n', cursor = 0;
    var add = function(line, js) {
        js? (code += line.match(reExp) ? line + '\n' : 'r.push(' + line + ');\n') :
            (code += line != '' ? 'r.push("' + line.replace(/"/g, '\\"') + '");\n' : '');
        return add;
    }
    while(match = re.exec(html)) {
        add(html.slice(cursor, match.index))(match[1], true);
        cursor = match.index + match[0].length;
    }
    add(html.substr(cursor, html.length - cursor));
    code += 'return r.join("");';
    return new Function(code.replace(/[\r\t\n]/g, '')).apply(options);
}

JavaScript template engine in just 20 lines.md

JavaScript template engine in just 20 lines

#####原文 -> #####Jobbole 译文 ->

var TemplateEngine = function(html, options) {
    var re = /<%([^%>]+)?%>/g, reExp = /(^( )?(if|for|else|switch|case|break|{|}))(.*)?/g, code = 'var r=[];\n', cursor = 0;
    var add = function(line, js) {
        js? (code += line.match(reExp) ? line + '\n' : 'r.push(' + line + ');\n') :
            (code += line != '' ? 'r.push("' + line.replace(/"/g, '\\"') + '");\n' : '');
        return add;
    }
    while(match = re.exec(html)) {
        add(html.slice(cursor, match.index))(match[1], true);
        cursor = match.index + match[0].length;
    }
    add(html.substr(cursor, html.length - cursor));
    code += 'return r.join("");';
    return new Function(code.replace(/[\r\t\n]/g, '')).apply(options);
}

JavaScript.md

My JavaScript Snippet

Object.prototype.extend.js

/**
 * 合并扩展对象方法
 * @param  {Object|Array} object   要被合并的对象或对象数组
 * @param  {Boolean} override 相同对象的属性是否要重写
 * @return {null}          没有返回值
 */
Object.prototype.extend = function (object, override) {
    var that = this;
    function ext(object, override){
        for (key in object) {
            if (object.hasOwnProperty(key)
                && ((! that.hasOwnProperty(key)) || override)) {

                that[key] = object[key];
            }
        }
    }

    if (object instanceof Array) {
        object.map(function(val){
            ext(val, override);
        });
    } else {
        ext(object, override);
    }
}

timeString.js

function timeString(delay, time){
    var reg = /^(\+|-) ?(\d+) ?(day|month|year|hours|minutes|seconds)$/;
    var method = [];
    var datetime = new Date();

    if (typeof time != 'undefined') {
        try {
            datetime = new Date(time);
        } catch (e) {
            console.error(e);
            return false;
        }
    }
    var localeDate = datetime.toLocaleDateString();
    // var datePart = convDate(localeDate, '-');
    var year = datetime.getYear() + 1900,
        month = datetime.getMonth() + 1,
        date = datetime.getDate(),
        hours = datetime.getHours(),
        minutes = datetime.getMinutes(),
        seconds = datetime.getSeconds();
    var dateMaps = {
        day: date,
        month: month,
        year: year,
        hours: hours,
        minutes: minutes,
        seconds: seconds
    };
    var funcMaps = {
        day: 'setDate',
        month: 'setMonth',
        year: 'setYear',
        hours: 'setHours',
        minutes: 'setMinutes',
        seconds: 'setSeconds'
    }

    var old = 0,
        add = 0,
        newTime = 0;
    if (delay) {
        method = delay.match(reg);
        add = parseInt(method[2]);
        newTime = method[1] == '+' ? dateMaps[method[3]] + add : dateMaps[method[3]] - add;
        datetime[funcMaps[method[3]]](newTime);
        dateMaps.year = datetime.getYear() + 1900;
        dateMaps.month = datetime.getMonth() + 1;
        dateMaps.day = datetime.getDate();
        dateMaps.hours = datetime.getHours(),
        dateMaps.minutes = datetime.getMinutes(),
        dateMaps.seconds = datetime.getSeconds();
    }
    var datePart = [dateMaps.year, dateMaps.month, dateMaps.day].join('-');
    var timePart = [dateMaps.hours, dateMaps.minutes, dateMaps.seconds].join(':');
    var now = datePart + ' ' + timePart;

    return now;
}