JAVASCRIPT

do while javascript

do {
  //whatever
} while (conditional);

while vs do while javascript

// while vs do...while loops

/* while loops: check condition first. If true, execute code. */
let i = 0; 
while (i < 5) {
  console.log(i); // 0 1 2 3 4
   i += 1;
}

/* do-while loops: execute code at least once even if condition is false. 
Then check condition. If true, continue executing code. */
let j = 6;
do {
  console.log(j); // 6
    j += 1;
} while (j < 5);

while and do while loop in javascript

var arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
//  while loop
 let j= 0;
 while(j < arr.length)
 {
     console.log(arr[j]);
     j++;
 }

//do-while loop
 let k=0;
 do{
     console.log(arr[k]);
     k++;
 }
 while(k < arr.length);

do while loop javascript

//Joke: A programmers wife tells him: "While you're at the store, get some milk.
//...He never comes back...

var endOfCondition = 1;
var someCondition = true;

while(someCondition === true){  
  console.log("Executing code " + endOfCondition + " times.")  
  if(endOfCondition == 20)
  	{
      someCondition = false;        
  	} 
   endOfCondition++;
   console.log(endOfCondition - 1)
}

javascript do while

var result = '';
var i = 0;
do {
   i += 1;
   result += i + ' ';
}
while (i > 0 && i < 5);
// Despite i == 0 this will still loop as it starts off without the test

console.log(result);

javascript do while

/*
`do while` is essentially like the basic `while` statement
except for one key difference, the body is always executed
at least once.

Syntax:
do {
	body
} while (condition);

This is generally only useful if you need the body to run
at least once, before the condition is checked.
*/

let i = 10;
do {
	console.log(i);
	i--;
} while (i > 0);

/*
Outputs:
10
9
8
7
6
5
4
3
2
1
*/

do while javascript

let arr = ['jan', 'feb', 'mar', 'apr', 'may'], i = 0;
// do something at least 1 time even if the condition is false
do{
	console.log(arr[i]);
	i++;
}while(arr.includes('dec'));
// output: jan 

for loop vs while loop javascript

let i = 0;
//while checking for a state
while (i < 20){
  console.log(`do something while ${i} is less than 20`)
i++;
}
console.log("End of While Loop")
//for iterating a certain number of times
for(j = 0; j < 20; j++){
  console.log(`do something for ${j + 1} time(s)`)
}
console.log("End of For loop")

do while loop javascript

//First, declare a variable for initial value
const doWhile = 10;
//Second, get do-while and write what to execute inside do bracket.
//Then, write ++/-- according to your condition.
//Lastly, inside while bracket write your condition to apply.
do{
	console.log(doWhile)
  	doWhile--
}while(doWhile >= 0)