The programming instructions written in a program in a programming language are known as statements. The order of execution of Statements is the same as they are written.

1. Semicolons:

• Semicolons separate JavaScript statements.
• A semicolon marks the end of a statement in javascript. 

Example:

let a, b, c;
a = 2;
b = 3;
c = a + b;
console.log("The value of c is " + c + ".");

Output:

The value of c is 5.

Multiple statements on one line are allowed if they are separated with a semicolon.

a=2;b=3;z=a+b;

2. Code Blocks: 

JavaScript statements can be grouped together inside curly brackets. Such groups are known as code blocks. The purpose of grouping is to define statements to be executed together. 

Example: JavaScript function 

function myFunction() {
    console.log("Hello");
    console.log("How are you?");
}
myFunction()

Output:

Hello
How are you?

3. White Space:

Javascript ignores multiple white spaces.

Example:

console.log(10 * 2);
console.log(10 * 2);

Output:

 20
 20

Both the result will be the same

4. Line Length and Line Breaks: 

Javascript code’s preferred line length by most programmers is up to 80 characters. The best place to break a code line in Javascript, if it doesn’t fit, is after an operator. 

Example:

document.getElementById("tech1").innerHTML =
"Hello Tech!";

5. Keywords:

Keywords are reserved words and cannot be used as a variable name. A Javascript keyword tells about what kind of operation it will perform.