You can also specify an empty statement ( ), for example, like so:įor (let i = 0 i < 3 linearCoords.push()) Ĭonsole.log(linearCoords) //, , ] A statement is executed as long as the condition of the loop evaluates to true. If you omit the final-expression, then you can update the counter variable within the body of the loop, for example, like so:Ī for loop's body can have a single statement or a block of statements (grouped within curly braces). The final-expression part of the for loop is optional, and can be omitted. Here, typically, the counter variable is updated or incremented/decremented. This is the part of the for statement that is evaluated at the end of each loop iteration. You may omit the initialization part altogether as it's optional. The expressions in this part are evaluated once before the loop begins. This part is typically used to initialize variables. For example:įollowing topics describe each part of the loop in detail: The for statement is followed by a single statement, or a block of statements that are to be executed in the body of the loop.
The three expressions separated by a semi-colon, enclosed within parentheses are used to create the loop. A JavaScript for loop has the following four parts:įor (initialization condition final-expression)
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