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  • 2.v-bind

    1.v-bind:绑定class基本语法

    • 对象语法
    • 数组语法

    这两种语法都可以直接赋值或者用函数返回值

     1 <!DOCTYPE html>
     2 <html lang="en">
     3 <head>
     4     <meta charset="UTF-8">
     5     <title>Title</title>
     6     <style>
     7         .active {
     8             color: red;
     9         }
    10     </style>
    11 </head>
    12 <body>
    13 
    14 <div id="vue">
    15     <!--第一个class是固定绑定,第二个使用vue通过键值对绑定-->
    16     <!--1.Vue绑定class对象语法:{{css样式名称:vue中的数据变量}}-->
    17     <h2 class="title" :class="{active: isActive, line: isLine}">{{message}}</h2>
    18     <h2 class="title" :class="getClass1()">{{message}}</h2>
    19     <button @click="btnClick">button</button>
    20 
    21     <!--2.Vue绑定class数组语法-->
    22     <h2 class="title" :class="[test1, test2]">{{message}}</h2>
    23     <h2 class="title" :class="getClass2()">{{message}}</h2>
    24 </div>
    25 
    26 <!--导入Vue.js-->
    27 <script src="https://cdn.jsdelivr.net/npm/vue@2.5.21/dist/vue.min.js"></script>
    28 <script type="text/javascript">
    29     let vm = new Vue({
    30         el: '#vue',
    31         data: {
    32             message: "test vue",
    33             isActive: true,
    34             isLine: true,
    35             test1: "test1",
    36             test2: "test2"
    37         },
    38         methods: {
    39             btnClick: function () {
    40                 this.isActive = !this.isActive;
    41             },
    42             getClass1: function () {
    43                 return {
    44                     active: this.isActive,
    45                     line: this.isLine
    46                 }
    47             },
    48             getClass2: function () {
    49                 return [this.test1, this.test2];
    50             }
    51 
    52         }
    53 
    54 
    55     });
    56 </script>
    57 </body>
    58 </html>

    2.v-bind:绑定style基本语法

    • 对象语法
    • 数组语法

    注:v-bind绑定CSS属性写法

    • 驼峰式:fontSize
    • 短横线分隔:font-size
     1 <!DOCTYPE html>
     2 <html lang="en">
     3 <head>
     4     <meta charset="UTF-8">
     5     <title>Title</title>
     6     <style>
     7         .active {
     8             color: red;
     9         }
    10     </style>
    11 </head>
    12 <body>
    13 
    14 <div id="vue">
    15 
    16     <!--1.v-bind绑定style的对象语法-->
    17     <!--'50px' 必须加单引号,否则解析为一个变量-->
    18     <h2 :style="{fontSize: '50px'}">{{message}}</h2>
    19     <!--finalSize 当作一个变量-->
    20     <h2 :style="{fontSize: finalSize + 'px', backgroundColor: finalColor}">{{message}}</h2>
    21     <!--调用函数-->
    22     <h2 :style="getStyle1()">{{message}}</h2>
    23 
    24     <!--2.v-bind绑定style的数组语法-->
    25     <h2 :style="[testStyle1, testStyle2]">{{message}}</h2>
    26     <h2 :style="getStyle2()">{{message}}</h2>
    27 </div>
    28 
    29 <!--导入Vue.js-->
    30 <script src="https://cdn.jsdelivr.net/npm/vue@2.5.21/dist/vue.min.js"></script>
    31 <script type="text/javascript">
    32     let vm = new Vue({
    33         el: '#vue',
    34         data: {
    35             message: "test vue",
    36             finalSize: 100,
    37             finalColor: "red",
    38             testStyle1: {fontSize: "100px"},
    39             testStyle2: {backgroundColor: "red"}
    40 
    41         },
    42         methods: {
    43             getStyle1: function () {
    44                 return {
    45                     fontSize: this.finalSize + "px",
    46                     backgroundColor: this.finalColor
    47                 }
    48             },
    49             getStyle2: function () {
    50                 return [this.testStyle1, this.testStyle2];
    51             }
    52 
    53         }
    54 
    55 
    56     });
    57 </script>
    58 </body>
    59 </html>
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  • 原文地址:https://www.cnblogs.com/zhihaospace/p/12096061.html
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