javascript - 更改图像并使用 JavaScript 单击事件将其更改回来

Question

我有以下代码:

window.onload = function () {
'use strict';

var alcohol = document.getElementById('alcohol'); 

var changeImage = function (event) {
    alcohol.src = "image/alcohol3.jpg";
};

var changeBack = function (event) {
    alcohol.src = "image/alcohol.jpg";
};

addHandler(alcohol, "click", changeImage);
// addHandler(alcohol, "mouseout", changeBack);

如何通过第二次点击事件将图像更改回来？目前，它不起作用。

Answer 1

将您的 changeImage 函数更改为:

var changeImage = function (event) {
    if (alcohol.src != "image/alcohol3.jpg"){
       alcohol.src = "image/alcohol3.jpg";
    }
    else
    {
       alcohol.src = "image/alcohol.jpg";
    }
};