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HomeWeb Front-endFront-end Q&ADoes vue have a colon?

Does vue have a colon?

Jan 05, 2023 pm 03:27 PM
vue

vue中是有冒号的;通过查看Vue的API文档时,我们会发现冒号“:”其实是“v-bind”的缩写,所以在使用上,一般的常量属性不用添加冒号,如果是会产生变化的值则要加上冒号。

Does vue have a colon?

本教程操作环境:Windows10系统、Vue 3版、Dell G3电脑。

vue有没有冒号?

有。

Vue中的冒号变量

在使用Vue中经常看到HTML中有些标签属性前面添加了“:”,有些没有。

查看Vue的API文档时我们会发现冒号“:”其实是v-bind的缩写。

Does vue have a colon?

所以在使用上,一般的常量属性我们不用添加冒号;如果是会产生变化的值则要加上冒号。

关于vue属性使用和不使用冒号的区别说明

相关介绍:

为什么vue组件的属性,有的需要加冒号“:”,有的不用?

加冒号的,说明后面的是一个变量或者表达式;没加冒号的后面就是对应的字符串字面量!

例子:

<el-radio-group v-model="handle">
                    <el-radio :label="true">打开</el-radio>
                    <el-radio :label="false">关闭</el-radio>
</el-radio-group>

输出:true 或 false   值是Boolean类型

-----
<el-radio-group v-model="handle">
                    <el-radio label="true">打开</el-radio>
                    <el-radio label="false">关闭</el-radio>
</el-radio-group>

输出:”true" 或 “false”  值是String类型

参考:

https://cn.vuejs.org/v2/api/#v-bind

https://cn.vuejs.org/v2/guide/class-and-style.html

推荐学习:《vue视频教程

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