function test(dateString,times,func){
    var startTime=window.performance.now();
    // console.log('start='+startTime.getTime());
    for (var i = 0; i < times; i++) {
        func(dateString);
    };
    var endTime=window.performance.now();
    // console.log('endTime='+endTime.getTime());
    var gapTime=endTime-startTime;
    console.log('一共耗时:'+gapTime+'ms');
    //console.log('时间字符串'+dateString);
    return gapTime;
}

function tParse(dateString){
    var d=new Date(dateString);
    var formatDate=Date.parse(d);
}
function tGetTime(dateString){
    var d=new Date(dateString);
    var formatDate=d.getTime();
}
function tValueOf(dateString){
    var d=new Date(dateString);
    var formatDate=d.valueOf();
}
function tPlus(dateString){
    var d=new Date(dateString);
    var formatDate=+d;
}
function tNumber(dateString){
    var d=new Date(dateString);
    var formatDate=Number(d);
}


function allTest(){
    console.log(resultMatrix);
    times=$('.format-times').val();
    testTimes=$('.test-times').val();
    dateString=$('.date-string').val();
    if(!dateString){
        dateString=Date.now();
    }
    if(!times){
        times=50000;
    }
    if(!testTimes){
        testTimes=5;
    }
    console.log('times='+times+'testTimes='+testTimes);
    var allFunc=[tParse,tGetTime,tValueOf,tPlus,tNumber];
    if(!resultMatrix.length){
        resultMatrix=[];
    }
    for (var i = 0; i < testTimes; i++) {
        for (var j = 0,funcLength=allFunc.length; j < funcLength; j++) {
            var currentResult=$('.result').eq(j);
            var gapTime=test(dateString,times,allFunc[j]);
            var testTime=currentResult.find('span').length+1;
            if(!resultMatrix[testTime-1]){
                resultMatrix[testTime-1]=[];
            }
            console.log('1');
            var result="<span>第"+testTime+'次实验结果：耗时'+gapTime+'ms</span>';
            currentResult.append(result);//append不是一条一条加，而是全部结果出来后才加上去，why?
            // var result=document.createElement('span');
            // result.innerHTML='第'+testTime+'次实验结果：耗时'+gapTime+'ms';
            // currentResult.get(0).appendChild(result);
            resultMatrix[testTime-1][j]=gapTime;
        };
    };
    console.log(resultMatrix);
    for (var i = 0,timeAvg=[]; i <resultMatrix[0].length; i++) {
        // console.log('resultMatrix.length='+resultMatrix.length);
        for (var j = 0,timeAll=0; j < resultMatrix.length; j++) {
        // console.log('resultMatrix['+i+'].length='+resultMatrix[i].length);
        // console.log('resultMatrix['+j+']['+i+']='+resultMatrix[j][i]);
            // timeAll+=resultMatrix[j][i];
            timeAll=resultMatrix[j][i]+timeAll;//i和j下标的先后位置不能弄反。否则会undefined
            console.log('总时间='+timeAll);
        };
        timeAvg[i]=timeAll/resultMatrix.length;
        console.log(timeAvg[i]);
        $('.avg').eq(i).text(timeAvg[i]);
    };
}
var resultMatrix=new Array();
$('.submit').on('click',function(){
    allTest();
});