javascript - highcharts change series color when data is dynamically inserted -


i'm building web app in users required data in web page , end fetch data , pass front end. each time user require new set data, new line inserted chart. problem every line in same color , overlapped each other makes hard define. thought each time when new set of data inserted different color set automatically highcharts. tried manually set color when front end received data, didn't work. please me? much!

script.js:

$(document).ready(function() {     var colorcnt = 0;     var options = {             chart: {                     renderto: containerspline,                     type: 'spline',                 },             title: {                 text: '信息录入统计曲线图'             },             credits: {                 enabled: false             },             xaxis: {                 title: {                     text: '时间'                 },                 categories: []             },             yaxis: {                 title: {                     text: '数量'                 }             },             series: []     };        $.get("//localhost:5050", (data)=>{         // feed default data when web page firstly loaded         var series = {             name:'',              data: []             };         var xaxis = {                 categories: []             };         data.recordset.foreach((item)=>{             series.data.push(item.count);             series.name = item.dates;             options.xaxis.categories.push(item.times);         })         options.series.push(series);          var chart = new highcharts.chart(options);      })      $('button').click(()=>{         // feed required data user         var obj = {             year: $('#year').val(),             month: $('#month').val(),             day: $('#day').val()         }          $.post('//localhost:5050',obj, (data)=>{             options.chart.colorcount = options.chart.colorcount+1;             var series = {             name:'',              data: []             };             var xaxis = {                     categories: []                 };             console.log(data.recordsets);             data.recordset.foreach((item)=>{                 series.data.push(item.count);                 series.name = item.dates;                 options.xaxis.categories.push(item.times);             })             options.series.push(series);             var chart = new highcharts.chart(options);          })     }); })

index.html:

<!doctype html> <html> <head>     <meta charset="utf-8">     <title>信息录入统计</title>     <link rel="stylesheet" href="style.css">     <link rel="stylesheet" href="bootstrap.min.css"> </head> <body>     <div class="pageheader">         <h1>信息录入统计</h1>     </div>     <div class="jumbotron">         <div id="container">             <div class="input-group">                 <input type="text" class="form-control" placeholder="查询年份" aria-describedby="basic-addon2" id="year">                 <span class="input-group-addon" id="basic-addon2">年</span>                 <input type="text" class="form-control" placeholder="查询月份" aria-describedby="basic-addon2" id="month">                 <span class="input-group-addon" id="basic-addon2">月</span>                 <input type="text" class="form-control" placeholder="查询日期" aria-describedby="basic-addon2" id="day">                 <span class="input-group-addon" id="basic-addon2">日</span>                 <span class="input-group-btn">                     <button class="btn btn-default" type="button">查询</button>                 </span>             </div>             <div class="chart", id="containerspline"></div>         </div>     </div> <!-- <div id="containerspline"></div> --> <script src="jquery-3.2.1.min.js"></script> <script src="bootstrap.min.js"></script> <script src='highcharts.js'></script> <script src="highcharts-more.js"></script> <!-- <script src="data.js"></script> --> <script src='script.js'></script> </body> </html>

i solved problem myself. still manually set series's color each time when new set of data inserted. did before post question , failed because didn't set color attribute within series.

i wrote function returns different color according index , call each time new set of data inserted.

var switchcolor = (cnt) => {     var colors = ['#058dc7', '#50b432', '#ed561b', '#dddf00', '#24cbe5', '#64e572', '#ff9655', '#fff263', '#6af9c4'];     return colors[cnt]; }   $(document).ready(function() {     var colorcnt = 1;     var options = {             chart: {                     renderto: containerspline,                     type: 'spline',                 },             title: {                 text: '信息录入统计曲线图'             },             credits: {                 enabled: false             },             xaxis: {                 title: {                     text: '时间'                 },                 categories: []             },             yaxis: {                 title: {                     text: '数量'                 }             },             series: [{                 name:'',                 data:[]             },             ]     };   // show default data when web page firstly loaded     $.get("//localhost:5050", (data)=>{         var series = {             name:'',              data: []             };         var xaxis = {                 categories: []             };         data.recordset.foreach((item)=>{             series.data.push(item.count);             series.name = item.dates;             options.xaxis.categories.push(item.times);         })         options.series[0].data = series.data;         options.series[0].name = series.name;         var chart = new highcharts.chart(options);      })  // feed required data chart     $('#query').click(()=>{         var obj = {             year: $('#year').val(),             month: $('#month').val(),             day: $('#day').val()         }          $.post('//localhost:5050',obj, (data)=>{             options.chart.colorcount++;             var series = {             name:'',              data: [],             color: switchcolor(colorcnt++),             };             var xaxis = {                     categories: []                 };             console.log(data.recordsets);             data.recordset.foreach((item)=>{                 series.data.push(item.count);                 series.name = item.dates;                 options.xaxis.categories.push(item.times);             })              options.series.push(series);              var chart = new highcharts.chart(options);          })     });  // clear search history     $('#clear').click(() => {         options.series = [{             name: '',             data: []         }]          var chart = new highcharts.chart(options);          colorcnt = 0;     }) })

Comments

Post a Comment

Popular posts from this blog

android - InAppBilling registering BroadcastReceiver in AndroidManifest -

i'm implementing inapp billing in android app. works well, however, i'm trying decouple broadcast receiver activity manifest. suggestion in android's trivialdrive sample: // important: dynamically register broadcast messages updated purchases. // register receiver here instead of <receiver> in manifest // because call getpurchases() @ startup, therefore can ignore // broadcasts sent while app isn't running. // note: registering listener in activity bad idea, done here // because sample. regardless, receiver must registered after // iabhelper setup, before first call getpurchases(). currently there's class extends broadcastreceiver : public class iabbroadcastreceiver extends broadcastreceiver { /** * intent action receiver should filter for. */ public static final string action = "com.android.vending.billing.purchases_updated"; private final iabbroadcastlistener mlistener; public iabbroadcastreceiver(iabbroadcastlistener listener) { m...
Read more

python Tkinter Capturing keyboard events save as one single string -

is possible store keyboard events 1 string? code below stores 1 char , prints it. card reader or bar code reader, contains collection of character/ string not 1 character @ time. goal save char pressed text variable. from tkinter import * root = tk() def key(event): text= event.char text+= event.char print ("pressed", text) def callback(event): frame.focus_set() print ("clicked at", event.x, event.y) frame = frame(root, width=100, height=100) frame.bind("<key>", key) frame.bind("<button-1>", callback) frame.pack() root.mainloop() currently, creating text variable , everytime key() function gets called, , text stores last character typed. you can define text module level variable , , use module level text inside key function - text = '' def key(event): global text text+= event.char print("pressed", text)
Read more

sql server - Why does Linq-to-SQL add unnecessary COUNT()? -

here tables: create table customer ( cid int primary key, name varchar(32) ) create table ord ( oid int primary key, cid int foreign key references customer, address varchar(20) ) here's linq-to-sql statement: var aaa = c in db.customer select new { c, o = c.ord.tolist() }; and here's inexplicable query generated linq-to-sql: select [t0].[cid] [cid], [t0].[name] [name], [t1].[oid] [oid], [t1].[cid] [cid2], [t1].[address] [address], (select count(*) [dbo].[ord] [t2] [t2].[cid] = [t0].[cid]) [value] [dbo].[customer] [t0] left outer join [dbo].[ord] [t1] on [t1].[cid] = [t0].[cid] order [t0].[cid], [t1].[oid] i want understand how rid of count(*) part. it's entirely uncalled for! linq needs count(*) in order determine number of entries returned o = c.ord.tolist() .
Read more