前两天干活儿有个需求，在前端需要展示可折叠的Json树，供开发人员查看，这里采用JsonView组件来实现，它是一款用于展示Json的Vue组件，支持大体积的Json文件快速解析渲染，下面记录一下实现过程。

1.首先先下载好JsonView的组件：JsonView.vue，组件代码如下：

<template> <div class="bgView"> <div :class="['json-view', length ? 'closeable' : '']" :style="'font-size:' + fontSize+'px'"> <span @click="toggleClose" :class="['angle', innerclosed ? 'closed' : '']" v-if="length"> </span> <div class="content-wrap"> <p class="first-line"> <span v-if="jsonKey" class="json-key">"{{jsonKey}}": </span> <span v-if="length"> {{prefix}} {{innerclosed ? ('...' + subfix) : ''}} <span class="json-note"> {{innerclosed ? (' // count: ' + length) : ''}} </span> </span> <span v-if="!length">{{isArray ? '[]' : '{}'}}</span> </p> <div v-if="!innerclosed && length" class="json-body"> <template v-for="(item, index) in items"> <json-view :closed="closed" v-if="item.isJSON" :key="index" :json="item.value" :jsonKey="item.key" :isLast="index === items.length - 1"></json-view> <p class="json-item" v-else :key="index"> <span class="json-key"> {{(isArray ? '' : '"' + item.key + '"')}} </span> : <span class="json-value"> {{item.value + (index === items.length - 1 ? '' : ',')}} </span> </p> </template> <span v-show="!innerclosed" class="body-line"></span> </div> <p v-if="!innerclosed && length" class="last-line"> <span>{{subfix}}</span> </p> </div> </div> </div></template><script> export default { name: 'jsonView', props: { json: [Object, Array], jsonKey: { type: String, default: '' }, closed: { type: Boolean, default: false }, isLast: { type: Boolean, default: true }, fontSize: { type: Number, default: 13 } }, created() { this.innerclosed = this.closed this.$watch('closed', () => { this.innerclosed = this.closed }) }, data() { return { innerclosed: true } }, methods: { isObjectOrArray(source) { const type = Object.prototype.toString.call(source) const res = type === '[object Array]' || type === '[object Object]' return res }, toggleClose() { if (this.innerclosed) { this.innerclosed = false } else { this.innerclosed = true } } }, computed: { isArray() { return Object.prototype.toString.call(this.json) === '[object Array]' }, length() { return this.isArray ? this.json.length : Object.keys(this.json).length }, subfix() { return (this.isArray ? ']' : '}') + (this.isLast ? '' : ',') }, prefix() { return this.isArray ? '[' : '{' }, items() { if (this.isArray) { return this.json.map(item => { const isJSON = this.isObjectOrArray(item) return { value: isJSON ? item : JSON.stringify(item), isJSON, key: '' } }) } const json = this.json return Object.keys(json).map(key => { const item = json[key] const isJSON = this.isObjectOrArray(item) return { value: isJSON ? item : JSON.stringify(item), isJSON, key } }) } } }</script><style> .bgView { background-color: #fafafa; } .json-view { position: relative; display: block; width: 100%; height: 100%; white-space: nowrap; padding-left: 20px; box-sizing: border-box; } .json-note { color: #909399; } .json-key { color: rgb(147, 98, 15); } .json-value { color: rgb(24, 186, 24); } .json-item { margin: 0; padding-left: 20px; } .first-line { padding: 0; margin: 0; } .json-body { position: relative; padding: 0; margin: 0; } .json-body .body-line { position: absolute; height: 100%; width: 0; border-left: dashed 1px #bbb; top: 0; left: 2px; } .last-line { padding: 0; margin: 0; } .angle { position: absolute; display: block; cursor: pointer; float: left; width: 20px; text-align: center; left: 0; } .angle::after { content: ""; display: inline-block; width: 0; height: 0; vertical-align: middle; border-top: solid 4px #333; border-left: solid 6px transparent; border-right: solid 6px transparent; } .angle.closed::after { border-left: solid 4px #333; border-top: solid 6px transparent; border-bottom: solid 6px transparent; }</style>

2.在需要使用的vue页面中引用JsonView组件

import JsonView from '@/components/JsonView'

3.定义Json数据变量

jsonData:{},

4.页面展示代码

<JsonView :json="jsonData"></JsonView>

5.实现效果如下：

JsonViewAttributes

到此这篇关于Vue之使用JsonView来展示Json树的文章就介绍到这了,更多相关Vue使用JsonView展示Json树内容请搜索以前的文章或继续浏览下面的相关文章希望大家以后多多支持！