Reading-Notes

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JavaScript Operators and Expressions

JS Operators :

1. Assignment operator : Assign values to JavaScript variables
   • Example: x = y
   • In the next table you can see all Assignment Operators that reduce the arithmetic logic by simplifying the logic
2. comparison operator : Compares its operands and returns a logical value based on whether the comparison is true.
   • Example: Equal (==)
   • In the following table you can see all comparison Operators
3. Arithmetic operators : takes numerical values (either literals or variables) as their operands and returns a single numerical value. The standard arithmetic operators are addition (+), subtraction (-), multiplication (*), and division (/).
   • All arithmetic operators listed in the following table:
4. Logical operators: uses Boolean (logical) values; Also returns a Boolean value. However, the && and || operators actually return the value of one of the specified operands, so if these operators are used with non-Boolean values, they may return a non-Boolean value. The logical operators are described in the following table.

Loops and iteration

• Execute a block of code a number of times.

There are Two different kinds of loops:

1. FOR Loops : loops through a block of code a number of times
2. while loops : loops through a block of code while a specified condition is true

• Example of For loop shows the syntax

for (let step = 0; step < 5; step++) {
  // Runs 5 times, with values of step 0 through 4.
  console.log('Walking east one step');
}

• Example of while loop that shows the syntax

let n = 0;
let x = 0;
while (n < 3) {
  n++;
  x += n;
}