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To check if an array in React is empty, access its length property, such as arr.length. If an array's length is equal to 0, then it is empty. If the array's length is greater than 0, then it is not empty....

To use an image as a link in React, wrap the image in an a tag, or in a `Link` tag if using React routing. An image will be rendered instead of a link, and clicking on the image will cause the browser to navigate to the specified page....

Changing the color of an SVG in React: Don't set the `fill` and `stroke` properties on the SVG. Import the SVG as a component. Set the fill and stroke props on the component, e.g. MyLogo fill=...

To show an element on hover in React: Set `onMouseOver` and `onMouseOut` properties on the element. Track whether the user is hovering over the element in a state variable. Conditionally render other elements based on the state variable....

To set the target attribute of an element to _blank in React, use an anchor element and set the rel attribute, for example . The _blank value indicates that the resource is loaded in a new tab....

To open a link in a new tab in React, use an a element and set its `target` attribute to _blank, for example. A _blank value indicates that the resource is loaded into the new tab....

Generate a random number in React using the Math.random() function, for example, Math.floor(Math.random() * (max - min + 1)) + min. The Math.random function returns a number in the range of 0 to less than 1, but can also be used to generate numbers in...

To sort an array of objects in React: Create a shallow copy of the array. Call the array's `sort()` method, passing it a function. The function is used to define the sort order....

To toggle a class on click in React: Set an onClick attribute on the element. Store the active state in a state variable. Use a ternary operator to conditionally add a class....

To set a data attribute for an element in React, set the attribute directly on the element, such as or use the setAttribute() method, such as el.setAttribute('data-foo', 'bar'). We can access the element on the event object or...

Reverse an array in React: Create a shallow copy of the array using the spread syntax `(...)`. Call the `reverse()` method on the copy. Store the result in a variable....

Use template literals to concatenate strings in React attributes, such as div className={border ${myClass}}. Template literals are delimited by backticks, allowing us to embed variables and expressions using the dollar sign and curly brace ${expressio...

To handle double click events in React: Add an `onClick` attribute to the element. Use the detail property of the event object to get the number of clicks. If the number of clicks is equal to 2, handle the double click event....

The forEach() method can be used to iterate over an array outside of JSX code in React. If we need to iterate over an array and render its elements directly in JSX code, use the map() method instead....

Use css file to change the color of links in React. We can define the styles that apply to the anchor element and import the css file in the component to make the styles take effect....