Definition Function is a named block of statements which can be executed/used as per need again and again in the program simply by writing its name and can return some value. Features It is useful in making a program modular and understandable. Parameters : The arguments received by the function Read more…
Introduction JavaScript’s interaction with HTML is handled through various events that usually occur when the user or the browser manipulates a web page. Definition An event is an activity associated with certain manipulation occurring with a web page. Features Events are a part of the Document Object Model (DOM) Level Read more…
Example : A JS program to display string output. Example : A JS program to display the string length. Example : A JS program to accept string from user and display them. Example : A JS program to display a particular character from the string using charAt() string method. Example Read more…
Introduction In JavaScript, an array is a multivariant & linear container to store different types of data. Definition In JavaScript, an array is a data structure that can store a collection of values of any data type, including numbers, strings, booleans, objects, and other arrays at a contiguous location with Read more…
JS control statements are categorized into – (A) Decision Statements (B) Looping Statements (C) Jumping Statements (A) Decision/Conditional Statements: JavaScript supports the following decision statements:- (I) If statement (II) If-else statement (III) Else-if statement (IV) Switch case statement (I) If statement This statement executes a block of code if a Read more…
Introduction of JS Expression: An expression is a combination of operators and operands that can be evaluated. It may also include function calls which return values. For example – x=23.5; z=x+y; x=”welcome”; Operators: Operators are symbols which is used to perform some specific operation. Types of JS Operators JavaScript has Read more…
JS Keywords/Reserve Words : These words cannot be used as JavaScript variables, functions, methods, loop labels, or any object names by the programmers in their programs. A list of all the reserved words in JavaScript are – abstract, boolean, break, byte, case, catch, char, class, const, continue, debugger, default, delete, Read more…
History of JS JavaScript was designed by Brendan Eich, an American computer programmer in Netscape Communications Corporation. They created JavaScript in September 1995 and took only 10 days to develop the scripting language, then known as Mocha. The name JavaScript came from Netscape’s support of Java applets within its browser. The first stable Read more…
Example : A password box with show/hide the contents using eyeicon. Example : A password box with show/hide the contents using checkbox. Example : A password box to validate at least one uppercase, lowercase, number and at least 10 characters.