为什么我的计时代码总是返回0？

发布于 2024-09-19 06:34:12 字数 306 浏览 4 评论 0原文

我正在优化我的 html5 游戏引擎以解决性能问题，我想知道渲染过程需要多少时间。所以我得到了一堆渲染函数。每个渲染函数都渲染游戏的单独部分..例如块，玩家等。

function gameRender() {
    var d1 = new Date();
    var firstTime = d1.getTime();

    // render stuff

    var second = d1.getTime();
    console.log("Renders took " + (second-firstTime));
}

原文

i was optimizing my html5 game engine for performance issues and i want to know how much time a render process needs.So i got a bunch of render functions.Each of them render seperated parts of the game.. such as blocks , players etc.

function gameRender() {
    var d1 = new Date();
    var firstTime = d1.getTime();

    // render stuff

    var second = d1.getTime();
    console.log("Renders took " + (second-firstTime));
}

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单挑你×的.吻 2024-09-26 06:34:12

嗯，我遇到了问题：在 Google 上进行了一些搜索后，我意识到我必须为第二个变量使用第二个日期对象，所以这里是一个固定版本：

function gameRender() {
    var d1 = new Date();
    var firstTime = d1.getTime();

    // render stuff

    var d2 = new Date();
    var second = d2.getTime();
    console.log("Renders took " + (second-firstTime));
}

Hmm I got the problem: after a little search on Google , I realized that I must use a second date object for the second variable, so here is a fixed version:

function gameRender() {
    var d1 = new Date();
    var firstTime = d1.getTime();

    // render stuff

    var d2 = new Date();
    var second = d2.getTime();
    console.log("Renders took " + (second-firstTime));
}

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