让我们看一个使用该技术来管理多个函数的例子，被管理的这些函数分别操作不同的动画属性。首先，创建一个定时器以及用于管理多个处理程序的函数，示例如下。

<div id="box">Hello!div>
    <script>
 
 
        var timers = {
            timerID:0,
            timers:[],
            add:function(fn){
                this.timers.push(fn)
            },
            start:function(){
                debugger
                if (this.timerID) return;
                (function runText(){
                    if(timers.timers.length>0){
                        for(var i=0;itimers.length;i++){
                            if(timers.timers[i]()===false){
                                timers.timers.splice(i,1)
                                i--
                            }
                        }
                        timers.timerID = setTimeout(runText,0)
                    }
                })()
            },
            stop:function(){
                clearTimeout(this.timerID)
                this.timerID = 0
            }
        }
 
 
        var box = document.getElementById("box"),x=0,y=20;
 
 
        timers.add(function(){
            box.style.left = x + "px";
            if(++x >50) return false
        })
 
 
        timers.add(function(){
            box.style.top = y +"px"
            y += 2
            if(y>120) return false
        })
 
 
        timers.start()
 
 
 
 
        
    script>

assert(eval("5 + 5 ")===10,
            "5 and 5 is 10")
 
 
    assert(eval("var ninja =5;")===undefined,
            "no value was returned")
 
 
    assert(ninja === 5,"the varia ninja was created")
    debugger
    (function(){
        eval("var ninja = 6;") // 分号一定要的
        debugger
        assert(ninja === 6,
            "evaluate within the current scope")
    })()
 
 
    assert(window.ninja ===5,
            "the global was unaffected")
    assert(ninja ===5,
            "the global was unaffected")

var ninja = eval("({name:'Ninjia'})")
 
 
        assert(ninja != undefined ,"the ninja was created!")
        assert(ninja.name === 'Ninjia',
            "and with the expected property")
        
        var fn = eval("(function(){return 'Ninja';})");
        assert(typeof fn === 'function',
                "the funciton was created")
        assert(fn() === 'Ninja',
            "and returns expected value")
    
        
        var ninja2 = eval("{name:'Ninjia'}")
        assert(ninja2 != undefined ,"the ninja2 was created!")
        assert(ninja2.name === 'Ninjia',
            "and with the expected property")
        console.log(ninja2.name);