Introduction JavaScript’s built in methods call and apply can be used to invoke a function using a given. context  this ...

Solution: Use Math.round() Math.round(num * 100) / 100 Or, to be more precise and to ensure things like the 1.005 ...

Solution: You can check the value of the item if you only want to do so. if (strValue) { //do ...

Imagine you have a collection of these objects: const list = [ { color: 'white', size: 'XXL' }, { color: ...

It is our responsibility to show you how to check if a key exists within an object. Let’s first look at ...

Answer: Use the JavaScript splice() Method To insert a value, or item into an array at a particular index in JavaScript, you ...

JavaScript is used to open the browser and get the URL. You can also rely on JavaScript’s  location  property on ...

Answer: Use the JavaScript for Loop JavaScript offers a simple way to loop through, iterate over, or loop through arrays using the ...

Here’s something I discovered about JavaScript recently. Operator ! The operator is a familiar face of JavaScript, appearing when we need to ...

It is possible to be injured by automatic copying to the clipboard. It is therefore difficult for most browsers to do ...

Today, I had to verify that an object was not empty. Because JavaScript objects can be compared to reference in ...

Here are two ways you can build a link which runs JavaScript code. Which method is more efficient in terms functionality, ...

Answer: Use the toUpperCase() method JavaScript does not have a shortcut function such as the PHP ucfirst() that will make the first ...

Why does Google perpend while(1) to their (private JSON) responses? Here’s an example of a Google Calendar response when you ...

You can use the checked attribute to enable the checkbox for jQuery. You can also use prop() to get the property’s ...

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The includes() method determines the presence of a specified element in a Javascript array. This method returns true when the ...

Contents [hide] 1. Introduction 2. Using the DOM property “checked” 3. Using jQuery is(‘:checked’) 4. Using jQuery .prop() 5. Using ...

Using a regular expression This simple regex will accomplish the job: String.replace(/<TERM>/g, '') This is a very useful tool.Case-sensitive Substitution ...

It can be difficult to validate an email address. There are many valid but complex email addresses. It is impossible to ...

Answer: Use the forEach() Method To loop through all items in an array, you can use JavaScript’s array’s  forEach() function. For each ...

Native deep cloning It’s known as “structured Cloning”, works experimentally at Node 11 and later and will hopefully be available ...

We know that JavaScript allows us to declare variables with either var or let. The question now is how to tell ...

An asynchronous call in JavaScript can return a response in multiple ways. First, let’s understand the problem. Let’s say you have a ...

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