出差西楼

一些小笔记。

“g{}” 是什么？

想看c 是什么呢?

为什么console 打出来上面要标出个 g 呢？？？

后来在stackOverflow上有人热心回答了我的问题：

This is typically an instance of an object defined with the following pattern, sometimes referred as the Constructor pattern:

// Car constructor
function Car (miles) {
    this.miles = miles;
}

// Instantiate the object without arguments
var car = new Car();

After minification of javascript, the Car function could be renamed to a variable like g. Thus, the debugger will show the value g {} for the instance of the car.

"What type it is ?"

It should now be obvious that it depends of the script. In your case it seems to be a VehicleActionChannel.

 

此提问帖后来被另一位读者给予了回答者和提问者（我）双重vote， 嘿嘿！很久赚不到分了。

 getFields: function(text) {
        try {
            var fields = [];

            var matched = text.match(/{{[A-Za-z0-9_\(\)]+}}/g);
            if (Array.isArray(matched)) {
                for (var idx = 0; idx < matched.length; idx++) {
                    fields.push({
                        'origin': matched[idx],
                        'name': matched[idx].replace(/{{|}}/g, '')
                    });
                }
            }

            return fields;
        } catch (e) {
            iAuto.Logger.error(e.stack);
        }
    },

解析一段数据，用正则过滤一个数组的有效数据。

 

---

 

 getCurrentTime: function() {
        try {
            var date = new Date();
            var dateStr = '';

            dateStr = dateStr + (date.getMonth() + 1);
            dateStr = dateStr + '/' + date.getDate();
            dateStr = dateStr + '/' + date.getFullYear();
            var hours = date.getHours();
            var minutes = date.getMinutes();
            var seconds = date.getSeconds();
            if (hours > 12) {
                dateStr = dateStr + ' ' + (hours - 12);
            } else {
                dateStr = dateStr + ' ' + hours;
            }
            minutes = minutes >= 10 ? minutes : '0' + minutes;
            seconds = seconds >= 10 ? seconds : '0' + seconds;
            dateStr = dateStr + ':' + minutes;
            dateStr = dateStr + ':' + seconds;

            if (hours >= 12) {
                dateStr = dateStr + ' PM';
            } else {
                dateStr = dateStr + ' AM';
            }

            return dateStr;
        } catch (e) {
            iAuto.Logger.error(e.stack);
        }
    },

解析时间的算法。

 

function Map(){

    this.keys = new Array(); 

    this.data = new Object();

    var toString = Object.prototype.toString;

    /**
     * 当前Map当前长度
     */
    this.size = function(){
        return this.keys.length;
    }

    /**
     * 添加值
     * @param {Object} key
     * @param {Object} value
     */
    this.put = function(key, value){
        if(this.data[key] == null){
            this.data[key] = value;
        }
        this.keys.push(key);
    }
    /**
     * 根据当前key获取value
     * @param {Object} key
     */
    this.get = function(key){
        return this.data[key];
    }
    /**
     * 根据当前key移除Map对应值
     * @param {Object} key
     */
    this.remove = function(key){
        var index = this.indexOf(key);
        if(index != -1){
            this.keys.splice(index, 1);
        }
        this.data[key] = null;
    }
    /**
     * 清空Map
     */
    this.clear = function(){
        for(var i=0, len = this.size(); i < len; i++){
            var key = this.keys[i];
            this.data[key] = null;
        }
        this.keys.length = 0;
    }
    /**
     * 当前key是否存在
     * @param {Object} key
     */
    this.containsKey = function(key){
        return this.data[key] != null;
    }
    /**
     * 是否为空
     */
    this.isEmpty = function(){
        return this.keys.length === 0;
    }
    /**
     * 类型Java中Map.entrySet
     */
    this.entrySet = function(){
        var size = this.size();
        var datas = new Array(size);
        for (var i = 0, len = size; i < len; i++) {
            var key = this.keys[i];
            var value = this.data[key];
            datas[i] = {
                'key' : key,
                'value':value   
            }
        }
        return datas;
    }
    /**
     * 遍历当前Map
     * var map = new Map();
     * map.put('key', 'value');
     * map.each(function(index, key, value){
     *      console.log("index:" + index + "--key:" + key + "--value:" + value)
     * })
     * @param {Object} fn
     */
    this.each = function(fn){
        if(toString.call(fn) === '[object Function]'){
            for (var i = 0, len = this.size(); i < len; i++) {
                var key = this.keys[i];
                fn(i, key, this.data[key]);
            }
        }
        return null;
    }
    /**
     * 获取Map中 当前key 索引值
     * @param {Object} key
     */
    this.indexOf = function(key){
        var size = this.size();
        if(size > 0){
            for(var i=0, len=size; i < len; i++){
                if(this.keys[i] == key)
                return i;
            }
        }
        return -1;
    }
    /**
     * Override toString
     */
    this.toString = function(){
        var str = "{";
        for (var i = 0, len = this.size(); i < len; i++, str+=",") {
            var key = this.keys[i];
            var value = this.data[key];
            str += key + "=" + value; 
        }
        str = str.substring(0, str.length-1);
        str += "}";
        return str;
    }
    /**
     * 获取Map中的所有value值(Array)
     */
    this.values = function(){
        var size = this.size();
        var values = new Array();
        for(var i = 0; i < size; i++){
            var key = this.keys[i];
            values.push(this.data[key]);
        }
        return values;
    }

}

JavaScript中 利用 Array和Object实现Map

利用FireEvent捕捉：

在console中模拟FC接收到数据后作出反应，trigger事件

fc = itu.fcontrol.get('BTEventManager');

fc.trigger("weatherInfo",{"getId": "cab46f28-eaf4-cb6c-310b-4cb1678cdb41", "weather": {"sunrise": "8:00","sunset": "19:00","city":"New York ,CA","dailyForecast":[{},{}]}, "error": true});

模拟接收到FC发来的数据后，事件得到响应

itu.event.fireEvent('popmessage', {
                        'type': 'notice',
                        'id': 'MSG_WEATHER',
                        'content':  "volume!!!!",
                        'timeout': 6,
                        'toNC': true,