Sure, I can provide you with a guide on JavaScript loops with code examples.
Loops in JavaScript are used to execute a block of code repeatedly until a specific condition is met. There are three types of loops in JavaScript:
for
loopwhile
loopdo-while
loop
1. for
loop
The for
loop is used to iterate over a block of code a fixed number of times. It has the following syntax:
cssfor (initialization; condition; increment) {
// code to be executed
}
The initialization
expression is executed once before the loop starts. The condition
expression is evaluated before each iteration, and if it is true
, the loop continues. The increment
expression is executed after each iteration.
Here's an example of a for
loop that iterates from 0 to 4:
cssfor (let i = 0; i < 5; i++) {
console.log(i);
}
Output:
0 1 2 3 4
2. while
loop
The while
loop is used to iterate over a block of code as long as a condition is true
. It has the following syntax:
arduinowhile (condition) {
// code to be executed
}
The condition
expression is evaluated before each iteration, and if it is true
, the loop continues.
Here's an example of a while
loop that iterates until the variable i
is less than 5:
csslet i = 0;
while (i < 5) {
console.log(i);
i++;
}
Output:
0 1 2 3 4
3. do-while
loop
The do-while
loop is similar to the while
loop, but the code inside the loop is executed at least once before the condition is checked. It has the following syntax:
arduinodo {
// code to be executed
} while (condition);
The condition
expression is evaluated after each iteration, and if it is true
, the loop continues.
Here's an example of a do-while
loop that iterates until the variable i
is less than 5:
csslet i = 0;
do {
console.log(i);
i++;
} while (i < 5);
Output:
0 1 2 3 4
I hope this guide helps you understand JavaScript loops better!