美文网首页
vue.js的方法

vue.js的方法

作者: 六年的承诺 | 来源:发表于2019-03-09 22:17 被阅读0次

使用methods属性

例子：method.html

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>
<div id="app">
<h2>{{greeting('Afternoon')}}</h2>
<h2>{{message}}</h2>
</div>
<script>
var app=new Vue({
el:'#app',
data:{
message:'hello Vue'
},
methods:{
greeting:function(time){
return 'good'+time+'!'

                }
                
            }
        })
    </script>
</body>

</html>
运行结果

method.png
使用图标集

使用语法糖

v-on→@和v-on→:
例子：点我：v-on.html

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>
<div id="app">
<button type="button" @click="handleClick">点我</button>
</div>
<script type="text/javascript">
var app=new Vue({
el:'#app',
data:{
name:'软件1721'
},
methods:{
handleClick:function(){

                    alert(this.name);
                    }
                }
        }) 
    </script>
</body>

</html>

运行结果：


4.png

隐藏和显示1721：v-on1
<!DOCTYPE html>

<html>
<head>
<meta charset="utf-8">
<title>v-on指令练习-隐藏和显示的切换练习</title>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>
<div id="app">

        <h2 v-if="show">{{name}}</h2>
        <button type="button" @click="handleClick">隐藏/显示</button>
    </div>
    <script>
        var app=new Vue({
            el:'#app',
            data:{
                name:'软件1721',
                show:true
            },
            methods:{
                handleClick:function(){
                    /* if(this.show===true){
                        this.show===false;
                    }else{
                        this.show===true
                    } */
                    this.show=!this.show;
                }
        }
        })
    </script>
</body></html>
运行结果： 1.png 2.png

加一岁和减五岁:v-on2.html

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<title>年龄的加减</title>
</head>
<body>

    <div id="app">
        <h2>{{age}}</h2>
        <button type="button" @click="add">加一岁</button>
        <button type="button" @click="substrct(5)">减五岁</button>
    </div>
    <script type="text/javascript">
        var app = new Vue({
            el: '#app',
            data: {
                age: 30
            },
            methods: {
                add: function() {
                    /* if (this.show === true) {
                        this.show = false;
                    } else {
                        this.show = true;
                    } */
                    this.age += 1;
                },
                substrct: function(num) {
                    if (this.age < 5) {
                        alert("不能再减了");
                        return;
                    }
                    this.age -= num;
                }
            }
        })
    </script>
</body>

</html>

3.png

简书作者+关注:v-on3.html

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>

    <title>关注和取消关注</title>
    <link rel="stylesheet" type="text/css" href="css/font-awesome.min.css"/>
    <style type="text/css">
        .followed{
            color: #ddd;
        }
        .link{
            cursor: pointer;
        } 
        .cancle-followed{
            color: green;
        }
    </style>
</head>
<body>
    <div id="app">
        <h2>{{name}}</h2>
        <span class="followed link" v-show="followed" @click="handlefollow">
            <i class="icon-ok"></i>已关注
        </span>
        <span class="cancle-followed link" v-show="followed===false" @click="handlefollow">
            <i class="icon-plus"></i>关注
        </span>
    </div>
    <script type="text/javascript">
        var app = new Vue({
            el: '#app',
            data: {
                name:'简述作者',
                followed:false
            }, 
            methods: {
                handlefollow:function(){
                    this.followed=!this.followed;
                }
                }
        })
    </script>
</body>

</html>
运行结果：


5.png

模仿简书下面点喜欢做的图：likestyle.html

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<link rel="stylesheet" type="text/css" href="css/font-awesome.min.css"/>
<title>喜欢的样式</title>
<style type="text/css">
.btn{
width: 100px;
height: 40px;
color: rgb(234,111,90);
border-radius: 20px;
font-size: 14px;
background-color: #FFFFFF;
border: 1px solid rgb(234,111,90);
outline:none;
}
</style>
</head>
<body>
<div id="app">
<button type="button" @click="handlefollow" class="btn">
<span class="followed link" v-show="followed" @click="handlefollow">
<i class="icon-heart"></i>喜欢 | {{number}}
</span>
<span class="cancle-followed link" v-show="followed===false" @click="handlefollow">
<i class="icon-heart-empty"></i>喜欢 | {{number}}
</span>
</button>
</div>
<script type="text/javascript">
var app = new Vue({
el: '#app',
data: {
followed:false,
number: 30
},
methods: {
add: function() {
/* if (this.show === true) {

                        this.show = false;
                    } else {
                        this.show = true;
                    } */
                    this.number += 1;
                },
                substrct: function(num) {
                    if (this.age < 5) {
                        alert("不能再减了");
                        return;
                    }
                    this.age -= num;
                }
            }
        })
    </script>
</body>

</html>

运行结果： 6.png

相关文章