Loop statements are used to reduce the number of lines of codes.

The while loop

The JavaScript while loop is used to execute codes iteratively/repeatedly until the condition or expression becomes false. when the condition becomes false it terminates or stops the execution of codes.

syntax

while (expression) {
   Statements //to be executed if the expression is satisfied or teue.
}
Flow chart of while loop














Example
<html>
    <head>
        <title>JS while loop</title>
    </head>
    <body>
        <script>
            var n=1;
            document.write("--Start--"+"</br>");
            while (n<=10) {
                document.write(n+"</br>");
                n++;
            }
            document.write("--End--");
        </script>
    </body>
</html>
Output