Javascript Articles - Page 578 of 671

Use the Number() method in JavaScript to convert to Number. You can try to run the following code to learn how to convert [ ] to Number in JavaScript.ExampleLive Demo           Convert [] to Number                var myVal = [];          document.write("Number: " + Number(myVal));          

The onpaste event occurs when you paste content in the element.ExampleYou can try to run the following code to learn how to work with onpaste event in JavaScript.                          function pasteFunction() {             document.write("Text pasted successfully!");          }          

The altkey mouse event property is used to show whether SHIFT key is pressed or not when mouse button is clicked.ExampleYou can try to run the following code to learn how to implement altKey Mouse event in JavaScript.           Press and hold ALT key and then click here.                function funcAltKey(event) {             if (event.altKey) {                alert("ALT key: Pressed");             } else {                alert("ALT key: NOT Pressed");             }          }          

In JavaScript null is a predefined keyword that represents an empty value or unknown value of no value. The data type of null is an object. In this article, we will learn how to convert null into Boolean using multiple approaches which are following. Using the Boolean function Using the !! operator Using the Boolean function The Boolean function is used to get the Boolean value (true or false) of any variable, condition, or object. To convert the null into Boolean we just need to pass the null in the Boolean function. Syntax Boolean(null) Example 1 In this example, ... Read More

In this tutorial, we will learn how to set the inward offsets of the image border with JavaScript. An image can be set in the border as a border image using CSS properties. The border image can be set using different parameters. To set the inward offsets of the image border, use the borderImageSlice property in JavaScript. We will see two different approaches to setting up the inward offsets of the image border with JavaScript − The borderImageSlice Property The setProperty Method Using the borderImageSlice Property The border image’s inward offsets are specified by the borderImageSlice property of ... Read More

When a user copies the element’s content, then the oncopy event triggers.ExampleYou can try to run the following code to learn how to implement oncopy event in JavaScript.                          function copyFunction() {             document.write("Text copied!");          }          

The oncut event occurs when an element’s content is cut. You can try to run the following code to learn how to work with an oncut event in JavaScript −Example                          function cutFunction() {             document.write("Text cut!");          }          

In JavaScript null is a predefined keyword that represents an empty value or unknown value of no value. The data type of null is an object. In this article, we will learn how to convert null into String using multiple approaches which are following. Using the String() Method Concatenating null with an Empty string Using the Logical OR (||) Using Ternary Operator Using the String() Method The String() in JavaScript is used to convert a value to a String. To convert the null into a String just pass the null into this method. Here is the example ... Read More

This tutorial teaches us how to return the position of the element relative to floating objects in JavaScript. To set the relative position or to get or return the relative position we are going to use the ‘clear’ property of JavaScript which is defined under the style property of an object. There are a total of four relative positions that are ‘left’, ‘right’, ‘top’, and ‘bottom’, and if we relatively position an object then it will fill all the gaps of that particular side. The float property of the JavaScript language can be used to set the property of the ... Read More

The ondragend event triggers when an element is dragged completely.ExampleYou can try to run the following code to learn how to implement ondragend event in JavaScript.                    .drag {             float: left;             width: 100px;             height: 35px;             border: 2px dashed #876587;             margin: 15px;             padding: 10px;          }             ... Read More