Variable is the name of reserved memory location. It means when we declare a variable some part of memory is reserved. Rules for declaring a TypeScript variable: TypeScript variable name must begin with a letter, underscore, or dollar sign. TypeScript variable names are case sensitive. TypeScript reserved keywords like abstract, boolean etc can’t be used … Read more

When a variable is declared some part of memory is reserved. But how much memory will be reserved. It depends upon the data type of the variable.  i.e. how much memory will be reserved and which type of data can be stored in reserved memory is depends upon data type of the variable. The Type … Read more

Let us start TypeScript programming with simple “Hello World!” example. Create and save the file with .ts extension. In first line we declare a variable of string type. In second line we display the variable’s value at the terminal window. TypeScript Hello World: var message:string = “Hello World!” ; console.log(message); As we discussed in earlier … Read more

var keyword: The var statement is used to declare a variable. We can optionally initialize the value of that variable. Example: var num =10; let keyword: The let statement is used to declare a local variable in a block scope. It is similar to var, in that we can optionally initialize the variable. Example: let … Read more

JavaScript: JavaScript is the most popular programming language. It is lightweight and commonly used to create interactive and dynamic web pages. It is developed by Netscape in 1995 and named as LiveScript which is later renamed to JavaScript. Read more on JavaScript. TypeScript: TypeScript: TypeScript is a superset of JavaScript which primarily provides optional static … Read more