cocos -js 实现计算器功能

来源：互联网发布：雅思听力技巧知乎编辑：程序博客网时间：2024/06/14 01:46
var HelloWorldLayer = cc.Layer.extend({    _mainUI:null,    _lab:null,    TOTAL:18,    //输入的数    _tempValue: null,    //第一个输入的数    _firstDate: null,    //第二个输入的数    _secondDate: null,    //运算符    _tempType:null,    ctor:function () {        this._super();        this._init();    },    _init:function(){        this._tempValue="";        this._mainUI =ccs.load(res.main_json).node;        this.addChild(this._mainUI);        this._lab=ccui.helper.seekWidgetByName(this._mainUI,"result_lab");        //设置文本内容        this._addEvent();    },    //添加按钮点击事件    _addEvent:function(){        var btn;        for(var i=0;i<this.TOTAL;i++){            btn=this._getWidgetByName(this._mainUI,"btn_"+i);            btn.addTouchEventListener(this._inputHandler.bind(this),this._mainUI);        }    },    //点击按钮的回调方法    _inputHandler:function(sender,type){        if(type == ccui.Widget.TOUCH_ENDED){            var str =sender.name.split("btn_")[1];            if(str<= 10)this._checkInput(str);            else if(str == 11) this._checkResult();            else if(str <= 15) this._checkCreactor(str);            else if(str == 17) this._clearShow();        }    },    /*检查输入结果*/    _checkResult:function(){        this._secondDate=parseFloat(this._getLabString());        this._tempValue = "";        switch ( this._tempType){            case "12":                this._firstDate += this._secondDate;               break;            case "13":                this._firstDate -= this._secondDate;                break;            case "14":                this._firstDate *= this._secondDate;                break;            case "15":                this._firstDate /= this._secondDate;                break;        }        this._setLabString(this._firstDate);    },    /**检查运算符*/    _checkCreactor:function(str){        this._firstDate= parseFloat(this._getLabString());        this._tempType= str;        this._tempValue = "";    },    _checkInput:function(value){        var str = value;        if(this._getLabString()=="0"){            if(value == 10) this._tempValue = "0.";            else this._tempValue = str;        }else {            if (value == 10) str = (this._tempValue.indexOf(".") >= 0 ? "" : ".");            this._tempValue += str;        }        this._setLabString(this._tempValue);    },    //清除显示    _clearShow:function(){        this._tempValue = "";        this._setLabString("0");    },    //设置文本内容    _setLabString:function(str){        this._lab.setString(str);    },    _getLabString: function(){        return this._lab.getString()    },    _getWidgetByName:function(par,name){        return  ccui.helper.seekWidgetByName(par,name);    },});  //获取对象        getWidgetByname =function(par,name){             return ccui.helper.seekWidgetByName(par.name);},    //获取加载外部节点            getWidgetByname =function(source){                return ccs.load(source).node;            };var HelloWorldScene = cc.Scene.extend({    onEnter:function () {        this._super();        var layer = new HelloWorldLayer();        this.addChild(layer);    }});
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