JS While LoopWhile loop will execute a code block if the statement is true. 1 2 3 4 5 6 7 8 var i=0; var sum=0; while (i < 10) { sum += i; i++; } alert(sum); //55 Do while loop will execute the code block one time before check whether the statement is true. ...
while(condition); Example The example below uses ado whileloop. The loop will always be executed at least once, even if the condition is false, because the code block is executed before the condition is tested: Example do{ text +="The number is "+ i; ...
JavaScript while Loop The while loop repeatedly executes a block of code as long as a specified condition is true. The syntax of the while loop is: while (condition) { // body of loop } Here, The while loop first evaluates the condition inside ( ). If the condition evaluates to true,...
This JavaScript tutorial explains how to use the while loop with syntax and examples. In JavaScript, you use a while loop when you are not sure how many times you will execute the loop body and the loop body may not execute even once.
The example defines the while loop that starts with i=0. The loop will continue to run as long as i is less than, or equal to 10. The value of i will increase by 1 each time the loop runs. You can try this example online at the link below, which will open in a new window. ...
Learn how to use the while loop in JavaScript with examples and syntax. Understand its workings and best practices for effective coding.
Initially, the value of sum is 0, while n has a constant value of 100. Then, we iterate a for loop from i = 1 to n. In each iteration, i is added to sum. Then, the value of i is increased by 1. When i becomes 101, the test condition becomes false and sum will be equal...
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If the condition is true, the loop will return to step 1. Alternatively, if the while condition is false, the loop will terminate. Example of the do while Loops in JavaScript Now that we know the syntax of the do while loop, let us explore some examples of using it in JavaScript. ...
do while # Next is an example of a JavaScriptdo whileloop: copy varsum=0;varnumber=1;do{sum+=number;// -- bodynumber++;// -- updater}while(number<=50);// -- conditionconsole.log("Sum = "+sum);// => Sum = 1275 The block following do is executed first and then the condition...