Quick Answer: What is eval () in JavaScript Mcq?

What is eval () function in JavaScript?

The eval() function in JavaScript is used to evaluate the expression. It is JavaScirpt’s global function, which evaluates the specified string as JavaScript code and executes it. The parameter of the eval() function is a string. If the parameter represents the statements, eval() evaluates the statements.

Which type of JavaScript language is Mcq?

Explanation: JavaScript is not a full-blown OOP (Object-Oriented Programming) language, such as Java or PHP, but it is an object-based language.

What is a block statement in JavaScript Mcq?

Explanation: A block of statement can be understand as the set of the zero or more statements. In general, a block of statement has common definition “which combines one or a number of statements into a single statement for ease. 6) When interpreter encounters an empty statements, what it will do: Shows a warning.

Why is eval bad?

eval() is a dangerous function, which executes the code it’s passed with the privileges of the caller. If you run eval() with a string that could be affected by a malicious party, you may end up running malicious code on the user’s machine with the permissions of your webpage / extension.

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What is the main use of JavaScript?

JavaScript is a text-based programming language used both on the client-side and server-side that allows you to make web pages interactive. Where HTML and CSS are languages that give structure and style to web pages, JavaScript gives web pages interactive elements that engage a user.

What is Mcq Internet?

This set of Computer Networks Multiple Choice Questions & Answers (MCQs) focuses on “Internet”. … Explanation: Internet is nothing but an interconnected computer network providing a variety of communication facilities, consisting of a huge amount of small networks using standardized communication protocols.

Where should JavaScript be inserted?

the correct place to insert a JavaScript is ? the correct place to insert a JavaScript is The section & The section.

What is bootstrap Mcq?

Explanation: Bootstrap is a free and open source front end web framework for designing websites and web applications. … Explanation: It contains HTML and CSS based design templates for typography, forms, buttons, navigation and other interface components, as well as optional JavaScript extensions.

How does a for loop start?

The loop initialization where we initialize our counter to a starting value. The initialization statement is executed before the loop begins. If the condition is true, then the code given inside the loop will be executed, otherwise the control will come out of the loop. …

Which HTML element do we put the JavaScript?

Explanation: The <script> tag is used to contain javascript code.

Is JavaScript front end or backend?

JavaScript is used in both Back End and Front End Development. JavaScript is used across the web development stack. That’s right: it’s both front end and backend.

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What is JavaScript with example?

JavaScript is a programming language commonly used in web development. It was originally developed by Netscape as a means to add dynamic and interactive elements to websites. … For example, a JavaScript function may check a web form before it is submitted to make sure all the required fields have been filled out.

What is JSON format?

JavaScript Object Notation (JSON) is a standard text-based format for representing structured data based on JavaScript object syntax. It is commonly used for transmitting data in web applications (e.g., sending some data from the server to the client, so it can be displayed on a web page, or vice versa).

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