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vue-auto-focus

v1.0.0

Published

A vue directive that can let you control your input and textarea auto focus very easily!

Downloads

32

Readme

vue-auto-focus

GitHub issues GitHub forks GitHub stars Twitter

NPM

Description

A vue directive that can let you control your input and textarea auto focus very easily!

Vue指令,你可以很方便地对页面中所有input和textarea的自动聚焦行为进行流程控制

Installation

npm install vue-auto-focus

Usage

引入指令

import AutoFocus from 'vue-auto-focus'
Vue.use(AutoFocus)

限制

  • 指令必需用在需要控制的input和textarea元素父节点上
  • 需要指令控制自动聚焦的input和textarea元素必需设置data-index属性

使用说明

看使用说明时,请参对例子

  • data-current 指令挂载的父元素的属性,为当前聚焦的元素的data-index属性的值
  • data-action 执行指令时的自动聚焦行为,值为next时,自动聚焦到下一个元素,prev时,聚焦到上一个元素,first时聚焦到第一个元素,last时聚焦到最后一个元素,jump时,跳转到指令的元素
  • v-auto-focus="focusCtrl" 指令值,指令值变化时,执行data-action指定的行为
  • 自动聚焦后,需要监听@focus,更新data-current的值,否则下一次指令执行时,不会得到预期的行为

Example

例子

<template>
    <form v-auto-focus="focusCtrl" :data-current="currentIndex" :data-action="actionType">
        <input @focus="setFocusIndex(0)" type="text" data-index="0">
        <input @focus="setFocusIndex(1)" type="text" data-index="1">
        <textarea @focus="setFocusIndex(2)" name="" id="" cols="30" rows="10" data-index="2"></textarea>
        <input @focus="setFocusIndex(3)" type="text" data-index="3">
    </form>
</template>

<style rel="stylesheet/less" lang="less" scoped>
    
</style>

<script type="text/babel">
    export default {
        data() {
            return {
                focusCtrl: 0,  // 自动聚焦控制,变动时,执行自动聚焦指令
                currentIndex: 0, // 当前聚焦元素的索引
                actionType: 'next', // 自动聚焦的行为类型
            }
        },
        methods: {
            /**
             * 控制自动聚焦指令执行
             * @param actionType {string} 自动聚焦类型 it can be 'next'/'prev'/'first'/'last'/'jump'
             * @param index {string} 当actionType为'jump'时,需要传入将要聚焦元素的索引
             **/
            setFocus(actionType,index) {
                if (actionType === 'jump') {
                    this.currentIndex = index
                }
                this.focusCtrl++
                this.actionType = actionType
            },
            /**
             * 元素聚焦时,获取当前聚焦元素的索引
             * @param index {number} 当前聚焦的索引
             **/
            setFocusIndex(index) {
                this.currentIndex = index
            },
        }
    }
    
</script>

Development

npm run dev

License

MIT