Скачать или смотреть Iterate Through an Array with a For Loop

What is a for loop in JavaScript? A for loop repeats until a specified condition evaluates to false. The JavaScript for loop is similar to the Java and C for loop. A for statement looks as follows: js Copy to Clipboard for (initialization; condition; afterthought) statement.

The strict equality ( === ) operator checks whether its two operands are equal, returning a Boolean result.

The greater than operator returns true if the left operand is greater than the right operand, and false otherwise.

Recall how accumulators work:
let x += i
The variable x is going to act as the accumulator.
The variable i is the one which value will be stored (and accumulated) inside x
The expression += is an just abbreviation of x = x + i

Initialization: i is initialized with the value myArr.length - 1.
Condition: the loop is executed as long as i is greater than or equal to 0.
Final-expression: i is decremented by 1.
Statement: The function adds myArr[i]'s value to total until the condition isn’t met:

console: log() method. The console.log() method outputs a message to the web console. The message may be a single string (with optional substitution values), or it may be any one or more JavaScript objects. Note: This feature is available in Web Workers.