1 What is Coercion in JavaScript?
Type coercion is the process of converting value from one type to another (such as string to number, object to boolean, and so on)
Practice here the Best JavaScript Tricky Interview Questions and Answers. Find here the list of most popular Javascript Questions that are asked in companies like Facebook, Google, and Amazon, Reddit.
Practice here the best JavaScript Tricky Interview Questions and Answers.
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Type coercion is the process of converting value from one type to another (such as string to number, object to boolean, and so on)
By using Number.isInteger() function
In JavaScript, Object Equality is used for two purposes basically. "==" is used for comparing two variables by ignoring its data type whereas "===" is used for comparing two variables by checking its data type.
"===" is used instead of "==" because it can compare two variables by checking data type.
typeof() is a unary operator that returns a string indicating the type of the unevaluated operand whereas instanceof() is a binary operator, accepting an object and a constructor that returns a boolean indicating whether or not the object has the given constructor in its prototype chain.
To delete an element from the javascript array you can use the following technique:
You can create an object whose prototype is a given object by the given method i.e. var o = Object. create(Object); it creates a new blank object o whose prototype is the Object function.
To add a number to two variables at once with the help of the following example( foo += -bar + (bar += x)) where x is the number that is added to both variablLinting is the process of running a program that analyses your code for programmatic and stylistic errors.
The steps to get URL and and its parts in JavaScript are:
str.trim() method is used to remove the white spaces from both the ends of the given string.
Syntax:
str.trim()
Return value: This method returns a new string, without any of the leading or the trailing white spaces.
You can use the following code to strip whitespaces from String in JavaScript:
<!DOCTYPE html>
<html>
<head>
<title>
How to remove spaces from
a string using JavaScript?
</title>
</head>
<body>
<h1 style="color: green">
Online Interview Questions
</h1>
<b>
How to remove spaces from
a string using JavaScript?
</b>
<p>
Original string is:
Online Interviews Questions
</p>
<p>
New String is:
<span class="output"></span>
</p>
<button onclick="removeSpaces()">
Remove Spaces
</button>
<script type="text/javascript">
function removeSpaces() {
originalText =
"Online Interviews Questions";
newText =
originalText.replace(/ /g, "");
document.querySelector('.output').textContent
= newText;
}
</script>
</body>
</html>
Output:
JavaScript
JavaScript is a lightweight, interpreted programmi ...
JavaScript
...
JavaScript
To run JavaScript outside any browser, Node.JS can ...
JavaScript
...
JavaScript
Asynchronous JavaScript + XML (AJAX) uses many web ...
JavaScript
...
JavaScript
...
JavaScript
Developers who are interested in designing dynamic ...
JavaScript
...
JavaScript
EmberJS is a client-side framework used by million ...
JavaScript
...
JavaScript
Ext JS or Extended JavaScript used for the develop ...
JavaScript
Grunt JS is a JavaScript task runner by Ben Alman. ...
JavaScript
Gulp JS is a JavaScript toolkit that is used by yo ...
JavaScript
Handlebars.js is a popular templating engine based ...
JavaScript
JQuery is a JavaScript library that is used for si ...
JavaScript
JSON (JavaScript Object Notation) is a light-weigh ...
JavaScript
Knockout JS is a JavaScript standalone built on MV ...
JavaScript
...
JavaScript
Leaner Style Sheets (LESS) is a style sheet langua ...
JavaScript
Marionette JS is a minimalist JavaScript model whi ...
JavaScript
PhantomJs is used by developers who aim at buildin ...
JavaScript
PolymerJS is an open-source JavaScript library tha ...
JavaScript
...
JavaScript
React Native is a mobile application framework thr ...
JavaScript
...
JavaScript
...
JavaScript
TypeScript is a programming language for client-si ...
JavaScript
...
JavaScript
One of the popular JavaScript library which provid ...
JavaScript
Vue.js is a JavaScript framework used by creative ...
JavaScript
MeteorJS is mainly used to provide backend develop ...
JavaScript
...
JavaScript
...
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