How can generic objects be created?
Generic objects can be created as: var I = new object();
What are the two basic groups of data types in JavaScript?
They are as—Primitive Reference types Primitive types are number and Boolean data types. Reference types are more complex types like strings and dates.
What is break and continue statements?
Break statement exits from the current loop. Continue statement continues with next statement of the loop.
What are the disadvantages of using innerHTML in JavaScript?
If you use innerHTML in JavaScript, the disadvantage is Content is replaced everywhere We cannot use it like “appending to innerHTML Even if you use +=like “innerHTML = innerHTML +…
Does JavaScript has concept level scope?
No. JavaScript does not have concept-level scope. The variable declared inside the function has scope inside the function.
What a pop()method in JavaScript is?
The pop() method is similar to the shift() method, but the difference is that the Shift method works at the array’s start. The pop() method takes the last element off…
What are JavaScript Cookies?
Cookies are the small test files stored in a computer, and they get created when the user visits the websites to store information that they need. Examples could be User Name…
What are escape characters?
Escape characters (Backslash) is used when working with special characters like single quotes, double quotes, apostrophes, and ampersands. Place backslash before the characters to make it display. Example: document. write…
What is the difference between an alert box and a confirmation box?
An alert box displays only one button, which is the OK button. But a Confirmation box displays two buttons, namely OK and cancel.
What is the data type of variables in JavaScript?
All variables in JavaScript are object data types.