| chapter | 7 |
|---|---|
| pageNumber | 66 |
| description | While loops repetitively execute a block of code as long as a specified condition is true. |
While loops repetitively execute a block of code as long as a specified condition is true. It provides a way to automate repetitive tasks and perform iterations based on the condition's evaluation.
while (condition) {
// do it as long as condition is true
}For example, the loop in this example will repetitively execute its block of code as long as the variable i is less than 5:
var i = 0,
x = "";
while (i < 5) {
x = x + "The number is " + i;
i++;
}{% hint style="warning" %} Be careful to avoid infinite looping if the condition is always true! {% endhint %}