This JavaScript technique is used to create many effects, including image maps and tooltips. Interactive websites can offer an enhanced experience for visitors. There are a variety of ways you can make your site more interactive, including using animations, tooltips or other effects.
Some websites also display data as the visitor hovers over an area in the. This can include maps and other data visuals that allow users to hover their mouse over the image to see a particular data point with the tooltip. This effect can be achieved with HTML, CSS, and JavaScript with certain CSS techniques as well as JavaScript the DOM concept.
How to Add a Tooltip Over the Image in an HTML File
Images are a good method of conveying information visually appealing manner on a web page. They can also be useful for adding additional engaging effects, such as the simple gallery of images.
It is possible to add an infographic over the image using HTML by using CSS or JavaScript.
In a new file named index.html Add the outline of the HTML file:
- Within the body tag, include the container in the div. This div will include the tooltip and image elements:
- Within the container, insert an image. Be sure the image you choose to upload has an identical filename is located in the same directory as the HTML file:
- Underneath the image, you can add an div that represents the tooltip
- Within the header tag insert the style tag. In the style tag, style the image container, as well as the tooltip:
- Create an additional script tag at the bottom of your body tag:
- Within the script tag, utilize to use the DOM chooser tool, querySelector to retrieve an image’s HTML components of your image. Also, the tooltip
- Include an event listener for that mouseoverevent. This function will be activated when you move your mouse on the picture. In this case the tooltip will appear at the top of the screen.
- Create an event listener to that mouseoutevent. This function will be executed after the mouse is removed from the image. If this happens your tooltip disappears from the screen.
- Navigate to the index.html file with any browser, then move your mouse over it for a view of the tooltip:
How to Calculate and Display the X and Y Pixel Coordinates of the Image
Once the tooltip is visible on the screen, alter its location and the text to show the coordinates X and Y of the mouse.
- Modify the CSS design of the tooltip so that the tooltip will not be visible prior to hovering on the picture. This stops you from seeing the tooltip at lower right of the image prior to you move to the cursor’s position:
- Within the script tag, create a listener for an event, to be listening to events like the mousemoveevent. This function will be executed continually every when your mouse moves over the new pixels. Include the event parameter that will provide details regarding what’s happening during the mousemoveevent into the function. This includes the coordinates of the image that the mouse is located at the moment:
- By using the event, alter the horizontal location of the tooltip by using the left CSS property. Each when the mouse moves, the value will change to correspond with the X position of the cursor. This information is which is stored within the clientXvariable:
- Modify the vertical location of the tooltip by using the highest CSS property. ClientYrepresents the y coordinates of the mouse. This offsetHeightproperty contains any border or padding within the tooltip. Because you don’t want to place the tooltip located directly in the same place as the cursor, you can eliminate 10px of the location:
- Modify the text of the tooltip so that it displays the coordinates:
- Navigate to the index.html file using any browser, then you can hover your cursor over the picture to see the tooltip that has been updated:
Adding Effects to Your Interactive Webpage
You now know how to create an interactive tooltip on the image of your web page. You can further develop you HTML and CSS abilities by playing around with different fascinating HTML effects.
