How to use Loop in JavaScript?
Loops are useful when you repeatedly execute the same lines of code a specific number of times or as long as a specific condition is true. Suppose you want to…
How can JavaScript codes be hidden from old browsers that do not support JavaScript?
For hiding JavaScript codes from old browsers: Add “<!–” without the quotes in the code just after the <script> tag. Add “//–>” without the quotes in the code just before…
What is namespacing in JavaScript, and how is it used?
Namespacing is used for grouping the desired functions, variables, etc., under a unique name. It is a name that has been attached to the desired functions, objects, and properties. This…
How are JavaScript and ECMA Script related?
ECMA Script is like rules and guidelines, while Javascript is a scripting language used for web development.
What does the following statement declare?
var myArray = ]]; It declares a three-dimensional array.
Why you should not use innerHTML in JavaScript?
innerHTML content is refreshed every time and thus is slower. There is no scope for validation in innerHTML. Therefore, it is easier to insert rogue code in the document and…
What are the decodeURI() and encodeURI()?
EncodeURl() is used to convert URL into their hex coding. And DecodeURI() is used to convert the encoded URL back to normal. <script> var uri="my test.asp?name=ståle&car=saab"; document.write(encodeURI(uri)+ "<br>"); document.write(decodeURI(uri)); </script>…
What is unescape() and escape() functions?
The escape () function is responsible for coding a string to transfer the information from one computer to the other across a network. For Example: <script> document.write(escape("Hello? How are you!"));…
What is the unshift() method?
This method is functional at the starting of the array, unlike the push(). It adds the desired number of elements to the top of an array. For example – var…
What are Screen objects?
Screen objects are used to read the information from the client’s screen. The properties of screen objects are – AvailHeight: Gives the height of the client’s screen AvailWidth: Gives the…