echarts2.*版本tree樹圖點擊節點加載數據(或點擊節點收縮)實現參考
阿新 • • 發佈:2017-08-08
節點 tree echarts
自上一篇說明的點擊節點更換節點圖標後,發現網上有許多關於點擊節點加載數據(或點擊收縮節點)的問題,一直沒看到滿意的解答。現在在上一篇的基礎上做出如下實現:點擊節點動態加載/收縮子節點。
廢話不多說,代碼貼出來,簡單易懂:
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>echarts demo</title> <script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js"></script> <script src="http://echarts.baidu.com/build/dist/echarts.js"></script> <script type="text/javascript"> var chart; require.config({ paths: { echarts: ‘http://echarts.baidu.com/build/dist‘ } }); require([‘echarts‘, ‘echarts/chart/tree‘], function(ec) { chart = ec.init($("#main")[0]); chart.setOption(option); var ecConfig = require(‘echarts/config‘); chart.on(ecConfig.EVENT.CLICK, clickFun2); }) var option = { tooltip: { trigger: ‘item‘, formatter: ‘{b}:{c}‘, hideDelay: 0 }, series: [{ name: ‘樹圖‘, type: ‘tree‘, orient: ‘horizontal‘, // vertical horizontal rootLocation: { x: ‘10%‘, y: ‘60%‘ }, // 根節點位置 {x: ‘center‘,y: 10} nodePadding: 20, //智能定義全局最小節點間距,不能定義層級節點間距,有點搓。 symbol: ‘circle‘, symbolSize: 40, roam: true, data: [{ name: ‘手機‘, value: 6, symbolSize: [90, 70], cusField: ‘category‘, symbol: ‘image://http://www.iconpng.com/png/ecommerce-business/iphone.png‘, itemStyle: { normal: { label: { show: true, position: ‘right‘, formatter: ‘{b}‘ } } }, children: [{ name: ‘小\n米‘, //由於label的formatter存在bug,所以無法通過html進行格式化,如果要換行要用\n value: 4, symbol: ‘image://http://pic.58pic.com/58pic/12/36/51/66d58PICMUV.jpg‘, symbolSize: [60, 60], cusField: ‘product‘, children: [{ name: ‘小米11‘, symbol: ‘circle‘, cusField: ‘product‘, //自定義屬性,演示用,實際開發中可以在後臺建模產生series整個data時增加而外屬性以供使用 itemStyle: { normal: { label: { show: true, position: ‘bottom‘, formatter: ‘{b}--->>>‘ } } } }], itemStyle: { normal: { label: { show: true, position: ‘right‘, formatter: ‘{b}--->>>‘ //有bug,formatter不起作用,這個bug看網友求助已經很久了,但是後面更新的版本一直沒有解決 } } } }, { name: ‘蘋果‘, symbol: ‘image://http://www.viastreaming.com/images/apple_logo2.png‘, symbolSize: [60, 60], cusField: ‘product‘, itemStyle: { normal: { label: { show: false } } }, value: 4 } ] }] }] }; var mockData1 = {"name":"小米11","symbol":"circle","cusField":"product","itemStyle":{"normal":{"label":{"show":true,"position":"right"}}}}; var mockData2 = {"name":"小米22","symbol":"circle","cusField":"product","itemStyle":{"normal":{"label":{"show":true,"position":"right"}}}}; //簡單使用,點擊加載一個節點 function clickFun(param) { console.log(JSON.stringify(param)); if(param.data.children) param.data.children.push(mockData1); else param.data.children = [mockData1,mockData2]; // console.log(param); chart.refresh(); //一定要refresh,否則不起作用 } //關鍵點! //顯示的圖片是否有子節點以及是否收縮了建議用不同的symbol圖片(不直接使用的圖片預加載過來) function clickFun2(param) { // console.log(JSON.stringify(param)); if(!(param.data.children && param.data.children.length > 0)) { console.log(‘open‘); if(param.data.children_bak) { param.data.children = param.data.children_bak; } else { param.data.children = param.data.children ? param.data.children : [deepCopy(mockData1),deepCopy(mockData2)]; //加載數據,此處用測試數據 } } else { console.log(‘close‘); param.data.children_bak = param.data.children; param.data.children = []; //root節點會在refresh時讀children的length } console.log(param); chart.refresh(); //一定要refresh,否則不起作用 } function deepCopy(p, c) { var c = c || {}; for (var i in p) { if (typeof p[i] === ‘object‘) { c[i] = (p[i].constructor === Array) ? [] : {}; deepCopy(p[i], c[i]); } else { c[i] = p[i]; } } return c; } </script> </head> <body> <!-- 為ECharts準備一個具備大小(寬高)的Dom --> <div id="main" style="height:400px"></div> </body> </html>
本文出自 “11085961” 博客,請務必保留此出處http://11095961.blog.51cto.com/11085961/1954277
echarts2.*版本tree樹圖點擊節點加載數據(或點擊節點收縮)實現參考