What does “use strict” do in JavaScript?Craig Buckler
Who invented JavaScript? What is a browser plugin? What is XHTML? Give a deep explanation on where JavaScript can be used (What are some of the uses of JavaScript?) In Javascript, what does the requestAnimationFrame() function do?
To prevent the page from refreshing, you could use JavaScript:void(0).Example of JavaScript:void(0)We have a link that should only do something (display a message) upon two clicks (a double click). If you click once, nothing should happen. We can specify the double click code by using...
If you can’t get a code of the character of the string, you would like to get an exception signaling the error. But in JavaScript, access to any non-existing element of an array does not lead to an error: Copy >[1,2][3]undefined>({})['a']undefined>''[0]undefined That’s wh...
A scripting language like JavaScript (JS, for those in the know) does the heavy lifting by telling computer programs like websites or web applications to “do something.” In the case of JavaScript, this means telling those dynamic features described earlier to do whatever it is they do—...
Arrow functions, by default, do not define athiskeyword, meaning that they do not have their ownthisbinding. If you define athiskeyword within an arrow function, it’s no different from declaring a regular variable in JavaScript. It will lexically resolve to some enclosing scope that does def...
JavaScript Quiz: What does this function do? Are you ready for a quick programming challenge? You will be presented with 18 short JavaScript functions. Your mission is to decipher what they do, and choose the correct option from the list. Good luck!
Preventing Navigation <a href="javascript:void(0)">Click me</a> Browser View Click me In this example, clicking the link will not cause the browser to navigate anywhere. It essentially does nothing when clicked. Triggering JavaScript Action Continue Reading...Next...
How Does the JavaScript Code Work on Your Web Page? How Does JavaScript Differ from Other Programming Languages? How Do You Add JavaScript Code to a Website? What Is JavaScript FAQ What Is JavaScript and Why Is It Used? What Is the Difference Between Java and JavaScript?What...
How Does JavaScript Affect Site Performance? Implementing JavaScript on your website will negatively affect its performance. But when you use JS appropriately and in moderation, the benefits can counter the negative effects on performance. The more code and scripts on your page, the worse the page...