JavaScript While Loop JAVASCRIPT
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JavaScript While Loop
The While Loop
The while loop loops through a block of code as long as a specified condition is true.
Syntax
while (condition) {
// code block to be executed
}
// code block to be executed
}
Example: In the following example, the code in the loop will run, over and over again, as long as a variable (i) is less than 10:
while (i < 10) {
text += "The number is " + i;
i++;
}
The Do/While Loop
The do/while loop is a variant of the while loop. This loop will execute the code block once, before checking if the condition is true, then it will repeat the loop as long as the condition is true.
Syntax
do {
// code block to be executed
}
while (condition);
// code block to be executed
}
while (condition);
Example: 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:
do {
text += "The number is " + i;
i++;
}
while (i < 10);
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