Home Forums Chart Support I want to show tooltip upon Legend and Axis Label also. Reply To: I want to show tooltip upon Legend and Axis Label also.



Sorry, it is not possible to show tooltip for axis label as of now. However you can show tooltip for legend with the help of itemmouseover and itemmouseout event of legends as shown in this code snippet.

legend: {
    fontSize: 15,
    itemmouseover: function(e){
      showLegendToolTip(e.x, e.y, e.dataSeries.legendLongText);
    itemmouseout: function(e) {
for(var i=0; i<chart.options.data.length; i++) {
  chart.options.data[i].legendLongText = chart.options.data[i].legendText;
  chart.options.data[i].legendText = chart.options.data[i].legendLongText.slice(0, 10);

jQuery("#chartContainer").append("<div class='custom-legend-tooltip'></div>");
var customToolTipLegend = jQuery(".custom-legend-tooltip");

jQuery(".custom-legend-tooltip").on("mouseout", hideLegendToolTip);

function showLegendToolTip(x, y, text) {
  customToolTipLegend.css({left: x, top: y})

function hideLegendToolTip() {

Please take a look at this JSFiddle for complete working code on the same.

Show Tooltip for Legend

Also, you can show tooltip for legend by creating custom legends (DOM) and add title attribute to it. Please check out the code snippet below.

//Add custom-legends as list and attach click event to that
var legendListId = document.getElementById("legendList");

function customLegends(chart, legendListId){
  for(var i=0; i < chart.options.data.length; i++){	
    var li = document.createElement("li");
    li.appendChild(document.createTextNode(chart.options.data[i].legendText.slice(0, 10)));
    li.title = chart.options.data[i].legendText;
    chart.options.data[i].showInLegend = false;
    li.style.color = chart.options.data[i].color ? chart.options.data[i].color : chart.get("selectedColorSet")[i];
    $('li').each(function (i) {
      $(this).attr('id', (i));

  //Add click event to Custom-Legends being clicked
  $('li').click(function (event) {    		
    var index = $(this).index();
    var x = document.getElementById(index);   
    if (typeof (chart.options.data[index].visible) === "undefined" || chart.options.data[index].visible) {
      chart.options.data[index].visible = false;
    } else {
      chart.options.data[index].visible = true;

Check out this JSFiddle for complete working code.

Show Tooltip for Custom DOM Legend

Manoj Mohan
Team CanvasJS