Vue中使用JsonView來展示Json樹的例項程式碼
阿新 • • 發佈:2020-11-17
前兩天干活兒有個需求,在前端需要展示可摺疊的Json樹,供開發人員檢視,這裡採用JsonView元件來實現,它是一款用於展示Json的Vue元件,支援大體積的Json檔案快速解析渲染,下面記錄一下實現過程。
1.首先先下載好JsonView的元件:JsonView.vue,元件程式碼如下:
<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),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頁面中引用JsonView元件
import JsonView from '@/components/JsonView'
3.定義Json資料變數
jsonData:{},
4.頁面展示程式碼
<JsonView :json="jsonData"></JsonView>
5.實現效果如下:
JsonViewAttributes
到此這篇關於Vue之使用JsonView來展示Json樹的文章就介紹到這了,更多相關Vue使用JsonView展示Json樹內容請搜尋我們以前的文章或繼續瀏覽下面的相關文章希望大家以後多多支援我們!