For loops allow you to repeatedly run a block of code a certain number of times. This for loop logs to the console ten times:
for (var i = 0; i < 10; i++) {
// log the numbers 0 through 9
console.log(i)
}The first part, var i = 0, is run once at the beginning of the loop. The variable i is used to track how many times the loop has run.
The second part, i < 10, is checked at the beginning of every loop iteration before running the code inside the loop. If the statement is true, the code inside the loop is executed. If it is false, then the loop is complete. The statement i < 10; indicates that the loop will continue as long as i is less than 10.
The final part, i++, is executed at the end of every loop. This increases the variable i by 1 after each loop. Once i reaches 10, the loop will exit.
Create a file named for-loop.js.
In that file define a variable named total and make it equal the number 0.
Define a second variable named limit and make it equal the number 10.
Create a for loop with a variable i starting at 0 and increasing by 1 each time through the loop. The loop should run as long as i is less than limit.
On each iteration of the loop, add the number i to the total variable. To do this, you can use this statement:
total += i;After the for loop, use console.log() to print the total variable to the terminal.
Check to see if your program is correct by running this command:
javascripting verify for-loop.js