How to render a tooltip when hovering over the button in Javascript Diagram?

In Syncfusion® JavaScript Diagram, to display a tooltip on a button, we should create HTML-type nodes and define the button within a template. Bind this template to the nodes using the nodeTemplate property in the diagram. To ensure tooltips appear seamlessly, configure the Tooltip component and bind it using the onmouseover event, allowing the tooltip to trigger when hovering over the buttons.

The below code snippet explains how to render a tooltip while hovering over the button

created: function () {
     // Attach tooltips to all buttons in nodes after diagram creation
     var buttons = document.querySelectorAll('.tooltiphover');
     buttons.forEach((button) => {
         let tooltip = new ej.popups.Tooltip({
             opensOn: 'Custom',  // Set to custom for manual control
             content: 'Tooltip from hover'
         });
         tooltip.appendTo(button);

         // Open tooltip manually using the onmouseover event
         button.onmouseover = function (args) {
             tooltip.open(args.target);
         };

         // Optional: close the tooltip when the mouse leaves
         button.onmouseleave = function (args) {
             tooltip.close();
         };
     });
 } 

Sample : Click here for sample

Conclusion

I hope you enjoyed learning how to render a tooltip when hovering over the button in Javascript Diagram.
You can refer to our JavaScript Diagram feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our JavaScript Diagram example to understand how to create and manipulate data.
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