JavaScript For Loop_Basic Knowledge

Loops in JavaScript are used to execute the same piece of code a specified number of times (or when a specified condition is true).
JavaScript Loops
When writing code, you often want to execute the same piece of code repeatedly. We can use a loop to accomplish this function, so we don't have to write several lines of the same code repeatedly.
JavaScript has two different types of loops:
for
Loop a piece of code a specified number of times
while
Loop and execute the code when the specified condition is true for loop
in Use a for loop when the number of runs of the script has been determined.
Syntax:

Copy code The code is as follows:

for (var=start value; var<=end value;var=var step value)
{
Code to be executed
}

Example:
Explanation: The following example defines a Loop program, the starting value of i in this program is 0. Each time the loop is executed, the value of i will accumulate by 1, and the loop will continue to run until i equals 10.
Note: The step value can be negative. If the step value is negative, you need to adjust the comparison operator in the for statement.

[Ctrl A Select all Note: If you need to introduce external Js, you need to refresh to execute

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Result:

Copy code

The code is as follows:

The number is 0
The number is 1
The number is 2
The number is 3
The number is 4
The number is 5
The number is 6
The number is 7
The number is 8
The number is 9
The number is 10