更改图像并使用JavaScript单击事件将其更改回
我有以下代码:更改图像并使用JavaScript单击事件将其更改回,javascript,mouseclick-event,Javascript,Mouseclick Event,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/alc
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);
如何通过第二次单击事件更改回图像?目前,它不工作。将您的
changeImage
功能更改为:
var changeImage = function (event) {
if (alcohol.src != "image/alcohol3.jpg"){
alcohol.src = "image/alcohol3.jpg";
}
else
{
alcohol.src = "image/alcohol.jpg";
}
};
将
changeImage
功能更改为:
var changeImage = function (event) {
if (alcohol.src != "image/alcohol3.jpg"){
alcohol.src = "image/alcohol3.jpg";
}
else
{
alcohol.src = "image/alcohol.jpg";
}
};
您可以使用切换:
$("#alcohol").toggle(
changeImage() ,
changeBack()
);
您可以使用切换:
$("#alcohol").toggle(
changeImage() ,
changeBack()
);
您可以使用这样的闭包:
var changeImage = function() {
function a(event) {
alcohol.src = "image/alcohol3.jpg";
event.srcElement.onclick = b;
}
function b(event) {
alcohol.src = "image/alcohol.jpg";
event.srcElement.onclick = a;
}
return a;
}
addHandleaddHandler(alcohol, "click", changeImage());
首先是分配为处理程序的
a
函数,每次引发事件时,处理程序都在a
和b
之间切换。您可以使用这样的闭包:
var changeImage = function() {
function a(event) {
alcohol.src = "image/alcohol3.jpg";
event.srcElement.onclick = b;
}
function b(event) {
alcohol.src = "image/alcohol.jpg";
event.srcElement.onclick = a;
}
return a;
}
addHandleaddHandler(alcohol, "click", changeImage());
首先是分配为处理程序的a
函数,每次引发事件时,处理程序都在a
和b
之间切换