1.2 KiB
1.2 KiB
title
| title |
|---|
| Code Block |
Introduction
In computer programming, a block or code block is a section of code which is grouped together. Blocks consist of one or more declarations and statements. A programming language that permits the creation of blocks, including blocks nested within other blocks, is called a block-structured programming language. JavaScript is one such programming language.
A block statement in JavaScript is used to group zero or more statements. The block is delimited by a pair of curly brackets.
{
statement_1;
statement_2;
...
statement_n;
}
Examples
The block statement is commonly used with control flow statements (e.g. if...else, for, while) and functions.
while (x < 10) {
x++;
}
function addnums(num1, num2) {
var sum = 0;
sum = num1 + num2;
return sum;
}
Nested Blocks
for(var i = 0; i < 10; i++){
for(var j = 0; j < 10; j++){
console.log(i + ", " + j);
}
}