The JavaScript do-while loop is a control flow statement that executes a block of code at least once, and then repeatedly executes the block until the condition expression is true.
do {
//code block to be executed
}
while (condition);Example do while JavaScript
A simple example code executes a code block once and then continues if condition (i < 5) is true:
<!DOCTYPE html>
<html>
<head>
<script>
let i = 0;
do {
console.log(i)
i++;
}
while (i < 5);
</script>
</head>
<body>
</body>
</html>Output:
Print Array using do-while
<script>
const cars = ["BMW", "Volvo", "Saab", "Ford"];
let l = cars.length;
let i = 0;
do {
console.log(cars[i])
i++;
}
while (i < l);
</script>Output:
Do comment if you have any doubts or suggestions on this JS do-while loop.
Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.
OS: Windows 10
Code: HTML 5 Version