（腾讯课堂学习小demo：https://ke.qq.com/course/256052）
一、简单的指令应用 ——打击灭火器
图片素材点击腾讯课堂的链接获取
html：
1 <!DOCTYPE html>
2 <html lang="en">
3 <head>
4 <meta charset="UTF-8">
5 <meta name="author" content="xing.org1^-^">
6 <title>敲烂灭火器</title>
7 <link rel="stylesheet" href="style.css">
8 <script src="https://cdn.jsdelivr.net/npm/vue"></script>
9 </head>
10 <body>
11 <div id="app">
12 <div class="img-box" v-bind:class="{imgburst:ended}"></div>
13 <div v-show="!ended">生命值剩余：{{health}} %</div>
14 <div v-show="ended">你赢了！</div>
15 <div class="progress">
16 <div class="progress-child" v-bind:style="{width: health + ‘%‘}"></div>
17 </div>
18 <div class="button-box">
19 <button class="btn1" v-on:click="blow" v-bind:class="{disabled: ended}" >使劲敲</button>
20 <button v-on:click="restart">重新开始</button>
21 </div>
22 </div>
23 <script src="vueJson.js"></script>
24 </body>
25 </html>
html
总结： v-bind:class的后边，是一个对象，返回布尔值！！！ 并且，绑定的class样式名，不能有中横线链接符，比如：img-brust,这种会导致vue解析错误
css:
1 /*京东初始化*/
2 * {
3 margin: 0;
4 padding: 0;
5 font-family: "微软雅黑"
6 }
7 em,i {
8 font-style: normal
9 }
10 li {
11 list-style: none
12 }
13 img {
14 border: 0;
15 vertical-align: middle
16 }
17 button {
18 cursor: pointer
19 }
20 a {
21 color: #666;
22 text-decoration: none
23 }
24 a:hover {
25 color: #c81623
26 }
27 div{
28 text-align: center;
29 margin-bottom: 5px;
30 }
31 .img-box{
32 width: 200px;
33 height: 539px;
34 margin: 0 auto;
35 background: url("img/bag.png") no-repeat;
36 }
37 .imgburst{
38 background: url("img/bag-burst.png") no-repeat;
39 }
40 .progress{
41 width: 200px;
42 height: 20px;
43 margin: 0 auto;
44 overflow: hidden;
45 background: #fff;
46 border-radius: 5px;
47 border: 2px solid red;
48 }
49 .progress-child{
50 width: 100px;
51 height: 20px;
52 background: red;
53 }
54 .button-box{
55 width: 213px;
56 margin: 20px auto;
57 overflow: hidden;
58 }
59 button{
60 padding: 10px 20px;
61 margin-left: 10px;
62 border-radius: 5px;
63 border: 1px solid #999;
64 background: #e5ffc9;
65 }
66 button:hover,button:focus{
67 outline: none;}
68 button:hover{
69 background: #4488ff;
70 border-color: #4488ff;
71 color: #fff;
72 }
73 .btn1:hover{
74 background: red;
75 border-color: red;
76 }
77 button.disabled{
78 cursor: not-allowed;
79 background: #999
80 }
css
Vue.js:
1 new Vue({
2 el: "#app",
3 data: {
4 health: 100,
5 ended: false
6 },
7 methods: {
8 blow: function(){
9 this.health -= 10;
10 if(this.health <= 0){
11 this.ended = true;
12 this.health = 0
13 }
14 // console.log(this.health,this.ended)
15 },
16 restart: function(){
17 this.health = 100;
18 this.ended = false;
19 // console.log(this.health,this.ended)
20 }
21 }
22 })
Vue实例
注意： console.log打印很有帮助
二、v-on鼠标移动事件 —— 时刻显示鼠标地理位置
html:
1 <div id="canvas" @mousemove="mouseMove">x: {{mouseX}}, y: {{mouseY}}
2 <em class="em" @mousemove.stop="">在我的区域内停止更新，都是阻止事件（冒泡）修饰符的功劳</em>
3 </div>
html Code
css:
1 #canvas{
2 width: 680px;
3 padding: 150px 0;
4 text-align: center;
5 background: #dedede;
6 }
7 .em{
8 display: block;
9 padding: 10px 5px;
10 background: #f5c9c9;
11 font-style: normal;
12 color: #333;
13 }
css
Vue.js
1 new Vue({
2 el: "#vue-app",
3 data: {
4 mouseX: 0,
5 mouseY: 0,
6 },
7 methods:{
8 mouseMove: function(event){
9 console.log("5、我是mouseMove函数");
10 // console.log(event);
11 this.mouseX = event.offsetX;
12 this.mouseY = event.offsetY;
13 }
14 }
15 })
Vue.js
注意： console.log把event事件输出后，寻找到offsetX和Y属性的
时间： 2024-07-29 07:38:24