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JavaScript JavaScript Loops, Arrays and Objects Simplify Repetitive Tasks with Loops Create a for Loop

Posted by Martin Bornman
Martin Bornman
Courses Plus Student 12,662 Points

for loop

Seems the loops is my downfall.What is wrong with this code?

script.js 
i = 4;
for ( i = 4; i < 156; i +=) {
  console.log(i);
}

2 Answers

Maximillian Fox
Maximillian Fox
Courses Plus Student 9,236 Points

Hey there,

Your variable i is missing the var keyword. You need to use

var i = 4;

to declare it.

Also at the end of your for loop statements, I can see 

i +=

but there is no number specifying how much the i variable should increment. So you need to use

i += 1

Also, you can declare your i variable inside the for loop directly, so putting the above examples together should give you

for ( var i = 4; i < 156; i += 1 ){
  console.log(i);
}

Give it a try and remember to always check your console for errors :)

Gianmarco Mazzoran
Gianmarco Mazzoran
22,076 Points

Ops! didn't notice the var keyword! Good job!

Martin Bornman
Martin Bornman
Courses Plus Student 12,662 Points

Thanks Maximillian that really helps !!!

Gianmarco Mazzoran
Gianmarco Mazzoran
22,076 Points
Gianmarco Mazzoran
Gianmarco Mazzoran
22,076 Points

Hi, you forgot to add an increment number:

script.js 
i = 4;
for ( i = 4; i < 156; i += 1) {
  console.log(i);
}
Martin Bornman
Martin Bornman
Courses Plus Student 12,662 Points

Thanks Gianmarco!!!