[游戏开发]js 对数组对象中的属性进行格式化formater

封装代码

const orginalProto = Array.prototype;
let arrayProto = Object.create(orginalProto);
const methodsToPatch = [
  'push',
  'pop',
  'shift',
  'unshift',
  'splice',
  'sort',
  'reverse'
];
methodsToPatch.forEach(method => {
  arrayProto[method] = function () {
    for(let i=0;i<arguments.length;i++){
        let obj = {}
        for (x in arguments[i]) {
            Object.defineProperty(obj,'__'+x,{
                get: function(){
                    return Number(this[x])*100+'%';
                },
                set: function(val){
                    this[x] = val
               }    
            });
            obj[x] = arguments[i][x];
        }
        
        arguments[i] = obj;
    }
    orginalProto[method].apply(this, arguments);
  }
});

对其赋值

arrayProto.push({rota:0.1},{rota:0.2},{rota:0.4},{rota:0.5},{rota:0.6},{rota:0.8},{rota:0.9});

对其取值

arrayProto[0].__rota
// 输出     '10%'
arrayProto[0].rota
// 输出     0.1