javascript - How to show and hide legends in google chart -


could let me know best method show/hide line legends (if using checkbox changing visibility).

i should having maximum 7 legends in line chart.

my code below:

function drawgraph(chartsdata, title, charttype) {      //debugger;     google.charts.load('current', { 'packages': ['corechart'] });     google.charts.setonloadcallback(drawchart);      function drawchart() {         var data = new google.visualization.datatable();          data.addcolumn('string', '');         data.addcolumn('number', '');          try {              var data = google.visualization.arraytodatatable(chartsdata);         }         catch (e) {             //debugger;             //document.writeln(e);         }          var optionsbar = {             title: title,             isstacked: true,             haxis: {                 type: "datetime",                 showtextevery: 1,                 ticks: [2016,2017,2018,2019,2020,2021,2022,2023]             },             legend: {                 position: 'bottom',                 textstyle: { fontsize: 12 }             }         };          var optionsline = {             title: title,             //width: 500,             seriestype: 'line',             legend: {                 position: 'bottom',                 textstyle: { fontsize: 11 }             }         };          if (charttype == "line") {             var chart = new google.visualization.linechart(document.getelementbyid('chartdiv'));             chart.draw(data, optionsline);         }         else {             var chart = new google.visualization.columnchart(document.getelementbyid('chartdiv'));             chart.draw(data, optionsbar);         }     } }

toggle legend using none/bottom position:

legend: {position: 'none'} //to hide

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