使用javascript/jQuery查找已单击的图像
我正在制作一种图库,目的应该是,如果你点击一个图像,屏幕上会显示一个更大的图像。对于图像,它应该是一个标题和一个文本。我的问题是,我怎样才能知道哪一个被点击了,从而显示正确的图像、文本和标题 通过使用使用javascript/jQuery查找已单击的图像,javascript,jquery,image-gallery,Javascript,Jquery,Image Gallery,我正在制作一种图库,目的应该是,如果你点击一个图像,屏幕上会显示一个更大的图像。对于图像,它应该是一个标题和一个文本。我的问题是,我怎样才能知道哪一个被点击了,从而显示正确的图像、文本和标题 通过使用this.src我能够找到图像源,但找不到从那里开始的方法。不知道这是否在正确的轨道上 无论如何。以下是我目前的代码: $(document).ready(function() { var gallery = [ { "img" : "im
this.src
我能够找到图像源,但找不到从那里开始的方法。不知道这是否在正确的轨道上
无论如何。以下是我目前的代码:
$(document).ready(function() {
var gallery = [
{
"img" : "img/gallery/gameboy2.png",
"title" : "GameBoy Color",
"about" : "A-ball",
"price" : 99,
"category" : ["gameboy", "color", "console", "game"]
},
{
"img" : "img/gallery/phone.png",
"title" : "Hamburger Phone",
"about" : "What is a smartphone?",
"price" : 129,
"category" : ["phone","hamburger"]
},
{
"img" : "img/gallery/gameboy.png",
"title" : "Nintendo GameBoy",
"about" : "Things doesnt get better with time. This is the shit.",
"price" : 499,
"category" : ["game","console", "gameboy"]
},
{
"img" : "img/gallery/game2.png",
"title" : "SEGA",
"about" : "Things doesnt get better with time. This is the shit.",
"price" : 699,
"category" : ["game","console", "sega"]
},
{
"img" : "img/gallery/gameboy2.png",
"title" : "GameBoy Color",
"about" : "A-ball",
"price" : 99,
"category" : ["gameboy", "color", "console", "game"]
},
{
"img" : "img/gallery/phone.png",
"title" : "Hamburger Phone",
"about" : "What is a smartphone?",
"price" : 129,
"category" : ["phone","hamburger"]
},
{
"img" : "img/gallery/gameboy.png",
"title" : "Nintendo GameBoy",
"about" : "Things doesnt get better with time. This is the shit.",
"price" : 499,
"category" : ["game","console", "gameboy"]
},
{
"img" : "img/gallery/game2.png",
"title" : "SEGA",
"about" : "Things doesnt get better with time. This is the shit.",
"price" : 699,
"category" : ["game","console", "sega"]
}
];
var submit_search = document.getElementById("submit_search");
submit_search.addEventListener("click", searchItem);
showItemsList(gallery);
/*
Create a li element and append to already existing ul
Show an image of the product, and below the image show product title and price
*/
function showItemsList(gallery) {
var ul = document.getElementById("product_list");
ul.innerHTML = "";
for(i =0; i < gallery.length; i++) {
// get the current product
var currentProduct = gallery[i];
// create element li
var li = document.createElement('li');
// create product img
var productImg = document.createElement('img');
productImg.src = currentProduct.img;
productImg.className = "thumbnail";
productImg.addEventListener("click", showItem);
li.appendChild(productImg);
// create caption
li.appendChild(document.createTextNode(currentProduct.title + " " + currentProduct.price + "kr"));
ul.appendChild(li);
}
}
/*
If someone click on a product, show a larger picture with a caption telling about the product
If you click the picture again, it minimize back to a thumbnail
*/
function showItem() {
// display the layer
document.getElementById("overlay").style.display = "block";
// add the name of the product
var h2 = document.getElementById("header_products");
var single_item_page = document.getElementById("single_item");
h2.appendChild(document.createTextNode("Hej"));
}
$(文档).ready(函数(){
变量库=[
{
“img”:“img/gallery/gameboy2.png”,
“标题”:“游戏男孩颜色”,
“关于”:“A球”,
“价格”:99,
“类别”:[“游戏机”、“颜色”、“控制台”、“游戏”]
},
{
“img”:“img/gallery/phone.png”,
“标题”:“汉堡包电话”,
“关于”:“什么是智能手机?”,
“价格”:129,
“类别”:[“电话”、“汉堡”]
},
{
“img”:“img/gallery/gameboy.png”,
“标题”:“任天堂游戏男孩”,
“关于”:“事情不会随着时间而好转,这是狗屎。”,
“价格”:499,
“类别”:[“游戏”、“控制台”、“游戏机”]
},
{
“img”:“img/gallery/game2.png”,
“标题”:“世嘉”,
“关于”:“事情不会随着时间而好转,这是狗屎。”,
“价格”:699,
“类别”:[“游戏”、“控制台”、“世嘉”]
},
{
“img”:“img/gallery/gameboy2.png”,
“标题”:“游戏男孩颜色”,
“关于”:“A球”,
“价格”:99,
“类别”:[“游戏机”、“颜色”、“控制台”、“游戏”]
},
{
“img”:“img/gallery/phone.png”,
“标题”:“汉堡包电话”,
“关于”:“什么是智能手机?”,
“价格”:129,
“类别”:[“电话”、“汉堡”]
},
{
“img”:“img/gallery/gameboy.png”,
“标题”:“任天堂游戏男孩”,
“关于”:“事情不会随着时间而好转,这是狗屎。”,
“价格”:499,
“类别”:[“游戏”、“控制台”、“游戏机”]
},
{
“img”:“img/gallery/game2.png”,
“标题”:“世嘉”,
“关于”:“事情不会随着时间而好转,这是狗屎。”,
“价格”:699,
“类别”:[“游戏”、“控制台”、“世嘉”]
}
];
var submit_search=document.getElementById(“submit_search”);
提交_search.addEventListener(“单击”,搜索项);
展览项目列表(画廊);
/*
创建li元素并附加到已存在的ul
显示产品的图片,图片下方显示产品名称和价格
*/
功能展示项目列表(图库){
var ul=document.getElementById(“产品列表”);
ul.innerHTML=“”;
对于(i=0;i
您可以使用jQuery查找索引
例如,您可以运行此单击功能发送警报
$('ul li').click(function(){ alert($(this).index()); });
试试这个
$('ul li').click(function(){
var src = $(this).find('img').attr('src');
var keepGoing = true;
$.each(gallery, function(index, obj){
if (!keepGoing)
return true;
if (obj.img == src){
alert(obj.title);
keepGoing = false;
}
})
});
这是一把小提琴:
为了避免在单击一个图像时遍历所有图像,可以将image src作为gallery变量中的键
例如:
$(function(){
var gallery = {
"img/gallery/gameboy2.png" : {
"title" : "GameBoy Color",
"about" : "A-ball",
"price" : 99,
"category" : ["gameboy", "color", "console", "game"]
},
"img/gallery/phone.png": {
"title" : "Hamburger Phone",
"about" : "What is a smartphone?",
"price" : 129,
"category" : ["phone","hamburger"]
}
};
$('ul li').click(function(){
var src = $(this).find('img').attr('src');
var img = gallery[src];
alert(img.title);
});
});
下面是该方法的要点:
Edit:updated fiddle当您将任何元素添加到页面中时,您可以将“onClick”回调附加到该元素。单击项目时将调用onClick中提到的函数。使用onClick传递的事件将标识单击了哪个元素。我使用了“addEventListener”听说这是一种更好的方法,而不是onClick。因此,我只是将其添加到我的数组下,而不关心函数
showItem
?您可以在事件开始时用任何您想要调用的函数替换上面示例中的警报
,包括showItem
:)非常感谢您的帮助,但是jQuery对我来说仍然有点困难。最后在每个img元素上添加了一个id,并使用this.id
来获得正确的结果。