pleview.blogg.se - Quiz in javascript

☐ Client-side scripting language (web browsers)ĮCMAScript presents a standard or set of rules that JavaScript follows, and tries to adopt over time. ☐ Language that follows ECMAScript standard Today you can also write mobile and desktop applications in JavaScript. Today, JS engines are embedded in many other types of host software, including server-side in web servers and databases, and in non-web programs such as word processors and PDF software. JavaScripts works inside web browsers only?

James Gosling originally developed the Java programming language.Ģ.

Douglas Crockford specified JSON format.

Brendan Eich created the very first JavaScript engine for the Netscape Navigator Web browser.

☑ Brendan Eich ☐ Douglas Crockford ☐ James Gosling ☐ Ryan Dahl Choose a way to add a new property “price” to the constructor “Shoes”. Which timing event is used to delay the execution of the function? You need to check the Internet connectivity status in a browser. How can you detect the client’s browser type? Which of the following properties return the URL of the current page. Variables created without the keyword var, are always global, even if they are created inside a function. What is the result of the comparison using the = operator ? If a function is called with a missing argument, the value of the missing argument is set to undefined. Moving declarations to the top of the script is called hoisting Can we declare a variable if we have used it before? Does the addEventListener() method allow you to add many events to the same element? A string can be converted to an array using which method: Which of the following events will you add in the addEventListener() method? To add an element to the end of an array you use: Are semicolons required at the end of the JavaScript line?

What is the return of the next comparison: Can you test JavaScript code inside web browsers like Firefox, Chrome, Microsoft Edge? Which JavaScript event occurs when the user clicks an HTML element? What is the correct way to write a JavaScript array? How do you write “Eureka” in an alert box? Can you guess the return of the following code: In JavaScript can we pass functions as arguments to other functions?

When we don’t assign a value to a variable it will be? To get the data type of some variable you will use: How do you declare a JavaScript variable x? What is correct commenting in JavaScript? The external JavaScript file must contain the tags. What is the correct syntax to use an external script called “new.js”? Where is the correct place to insert JavaScript on a web page? Inside what HTML tag you would put JavaScript code? JavaScript has primitive (immutable) data types and mutable object types. JavaScript is the scripting language of Java? Developers first reference on JavaScript should be MDN (Mozilla Developer Network)