How to use Repeated Statements

Describes how JavaScript uses repetitive statements.

In JavaScript, you can use repetitive statements such as for, for … in, for … of statements, and so on. This page describes loops using the most basic for.

By default, for blocks require three expressions.

• Expressions performed before repeated execution
• Expression for the conditions under which the iteration statement code is executed
• Expression after executing the iteration statement code

You can create a repeat statement using the following three expressions.

for (expression 1; expression 2; expression 3) {
// code block to be executed
}

For example, you can use the following basic iterations.

for (let i = 0; i < 10; i++) {
  console.log("Current i: ", i);
}

In this case, assign a variable called i to zero before executing the iteration statement, and increase the value of i by 1 for each code run. Repeat this operation only if i is less than 10.

For more repeat statements, you can refer to the following documents.