JavaScript Basic Series (vi) loop statement (for Loop)

If you want to run the same code over and over again, and the values are different each time, it is convenient to use loops.

document.write (Cars[0] + "<br>");d ocument.write (cars[1] + "<br>");d Ocument.write (cars[ 2] + "<br>");d ocument.write (cars[3] + "<br>");d ocument.write (cars[4] + "<br > ");d ocument.write (cars[5] +" <br> ");

But we write this.

 for (var i=0; i<cars.length;i++) {document.write (Cars[i]+ "<br>");}

Example: Output 1-100 number

 for (var i=0;i <=100;i++) {document.write (i+ "<br>")}

For is a pre-test loop, and you can initialize the variable before the loop, and define the code to execute after the loop, with the following syntax

for (inintialization;expression;psot=loop-expression) statement

The following procedures are performed:

1. Execute initialization statement

2. Determine if expression is true and if yes, continue, or terminate the entire loop body.

3. Executing the Loop Body statement code

4. Execute post-loop-expression Code

5. Return to the 2nd step operation

The most common form for a For loop is for (var i=0; i<n;i++) {statement}

It indicates that the loop executes a total of n times and is well suited for known loop count operations.

JavaScript Basic Series (vi) loop statement (for Loop)