javascript – JS删除并添加类计时功能

下面是一些我不知道如何修改以实现我想要的js.而不是onclick我需要在延迟40秒后激活js.

// retrieve the element
element = document.getElementById("ani");

// reset the transition by...
element.addEventListener("click",function(e){
e.preventDefault;

// -> removing the class
element.classList.remove("delay-1");

// -> triggering reflow /* The actual magic */
// without this it wouldn't work. Try uncommenting the line and the transition won't be         retriggered.
element.offsetWidth = element.offsetWidth;

// -> and re-adding the class
element.classList.add("delay-1");
},false);

解决方法

使用 setTimeout在指定的毫秒数后调用方法/任务.

setTimeout(function() {
    //your code/function here
},(40*1000)); //40 seconds