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The while loop will look through a block of code as long as a specified condition is met.

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Let's take a look at an example we'll create a script that outputs the values of a variable as long

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as the value does not exceed 20.

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We will start by creating a variable to store our initial value

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we'll call this variable.

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I

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will assign the value zero to this variable.

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Now we can create our while loop

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here we've instructed our script to output the value of i as long as the value does not exceed 20 The

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while loop will loop over and over 19 times in this case each time it will output the value of I started

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at 0 and incremented by 1

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so let's go ahead and save this file and preview it in our web browser

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so we can see that the value starts at 0.

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That's the initial value of AI and it's incremented by 1 up until nineteen

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we can modify our script if we adjust our maximum value to 40

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we can now see that it goes up to thirty nine

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we can also adjust the value of AI if we wanted to start the incrementing it fine

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and that is how the while loop works.