Javascript basic tutorial - for loop_basic knowledge

Using a loop is convenient if you want to run the same code over and over again, with different values ​​each time.

But let’s write it like this

Example: Output numbers from 1-100

for is a pre-test loop, and can initialize variables before the loop and define the code to be executed after the loop. Its syntax is as follows

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

The execution process is as follows:

1. Execute initialization statement

2. Determine whether expression is true. If so, continue, otherwise terminate the entire loop.

3. Execute the statement code of the loop body

4. Execute post-loop-expression code

5. Return to step 2

The most commonly used form of for loop is for(var i=0; i

It means that the loop is executed a total of n times, which is very suitable for operations with a known number of loops.

The above is all about the for loop in JavaScript. I hope you guys like it.