Node JS While Loop - Node js tutorial




While Loop:

  • While loop is an important in control flow statement.
  • It allows code to be executed based on a Boolean condition.
  • It is equivalent to repeating if condition statement.
  • The expression in while block evaluated first before starting the code execution.
  • If the expression returns true, the block code is executed else not. It is termed as pre-test loop.

Syntax :

while (condition) 
{
  	\\block of code to execute until the condition in the while satisfies
}
 nodejs loop

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Sample Code :

var x=0;
while (x!=5){
x++;
console.log("The value of x is : "+x);
}

Code Explanation :

 nodejs while loop code

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  • x is declared as 0.
  • The while part checks the condition as x is not equal to 5 as while (x!=5);
  • The loop block is stated with incrementing x value as x++. and the same is sent for output to console with the line of code “console.log("The value of x is : "+x)";.

Output :

  • Executing the while loop in the nodejs framework produces the output of the variable x:
 nodejs while loop output

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