HTML | DOM WheelEvent deltaY Property Last Updated : 13 Jun, 2023 Comments Improve Suggest changes Like Article Like Report The WheelEvent.deltaY property in HTML is used to return a positive double value when the web page is scrolled down, and a negative double value when the page is scrolled up, or else it returns zero. It is a read-only property. Syntax: event.deltaY Return Value: It returns a double value which indicates the scrolling direction of the mouse wheel. A positive double value represents the mouse is scrolled down.A negative double value represents mouse is scrolled up. Example: In this example, we will use WheelEvent.deltaY property HTML <!DOCTYPE html> <html> <head> <title>DOM WheelEvent deltaY Property</title> </head> <body onwheel="Geeks(event)" style="text-align:center; height: 5000px;"> <h1 style="color: green;"> GeeksforGeeks </h1> <h2> DOM WheelEvent deltaY Property </h2> <p>Scroll to see effect:</p> <p id="p"></p> <script> function Geeks(event) { let doc = event.deltaY; document.getElementById("p").innerHTML = doc; } </script> </body> </html> Output: Supported Browsers: The browser supported by deltaY property are listed below: Apple Safari 8.0Google Chrome 31.0Edge 12.0Firefox 17.0Opera 18.0Internet Explorer 9.0 Comment More infoAdvertise with us V Vishal Chaudhary 2 Follow Improve Article Tags : Web Technologies HTML Web technologies HTML-DOM HTML-Property +1 More Similar Reads HTML DOM Style borderImageRepeat Property The borderImageRepeat style property in HTML DOM is used to set or return the borderImageRepeat property. It specifies whether the border image should repeat to fill the area, stretched to fill the area, set to the initial value, inherit property from its parent, etc. Depending on the need it will b 4 min read HTML | DOM Style borderImageOutset Property In the Style borderImageOutset Space which contains the border, image is to be painted is called the border-image space. By default, the boundaries of the border image area match with the boundaries of the element’s border-box. However, these boundaries can be extended using the border-image-outset 4 min read HTML | DOM Figcaption Object The Figcaption Object in HTML DOM is used to represent the HTML <figcaption> element. The figcaption element is accessed by getElementById(). Syntax: document.getElementById("ID"); Where ID represent the element id. Example 1: html <!DOCTYPE html> <html> <head> <title> 2 min read HTML | DOM Style backgroundRepeat Property The backgroundRepeat property in HTML DOM is used to set or return the CSS backgroundRepeat property. It also checks whether the background-image is repeated or not. Syntax: It is used to returns the backgroundRepeat property.object.style.backgroundRepeat It is used to set the backgroundRepeat prope 2 min read HTML | DOM DList Object The DOM DList Object is used to represent the HTML <dl> tag. The Dlist element is accessed by getElementById(). Syntax: document.getElementById("ID");< Where “id†is the ID assigned to the “dl†tag.Example-1: html <!DOCTYPE html> <html> <head> <title>HTML DOM DList O 2 min read HTML DOM insertBefore() Method The insertBefore() method in HTML DOM is used to insert a new node before the existing node as specified by the user. Syntax: node.insertBefore( newnode, existingnode ) Parameters: This method accepts two parameters as mentioned above and described below: newnode: It is the required parameter. This 2 min read HTML DOM attributes Property The attributes property in HTML DOM returns the group of node attributes specified by NamedNodeMap objects. The NamedNodeMap object represents the collection of attribute objects and can be accessed by index number. The index number starts at 0. Syntax: node.attributes Return Value: It returns the N 2 min read HTML| DOM Variable Object The DOM Variable Object is used to represent HTML <var> element. The var element is accessed by getElementById(). Syntax: var element = document.getElementById("ID"); Where “id†is the ID assigned to the “var†tag. Example-1: HTML <!DOCTYPE html> <html> <head> <title>HT 2 min read HTML DOM Style borderBottomLeftRadius Property The borderBottomLeftRadius property in HTML DOM is used to set or return the radius of the border of the bottom-left corner. Syntax: It returns the borderBottomLeftRadius Property.object.style.borderBottomLeftRadiusIt is used to set the borderBottomLeftRadius property.object.style.borderBottomLeftRa 2 min read HTML DOM Dialog Object The DOM Dialog Object is used to represent the HTML <dialog> element. The Dialog element is accessed by getElementById(). It is used in HTML5. Syntax: document.getElementById("ID"); Where “id†is the ID assigned to the “Dialog†tag. Example 1: In this example, we will use DOM Dialog Object. HT 1 min read Like