JavaScript Statement: while
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In JavaScript,
the while statement identifies
block of statements that is repeatedly executed while a condition is true.
EXAMPLE:
HTML USED IN THIS EXAMPLE:
<!DOCTYPE html>
<html> <!-- Copyright (c) Nematrian Limited 2018 -->
<head>
<style>
table,th,tr,td {border: 1px solid black; border-collapse: collapse;}
</style>
</head>
<body>
<table>
<tr>
<th>Example</th>
<th>Resulting value of <code>x</code></th>
</tr>
<tr>
<td><code id="Example"></code></td>
<td><code id="Result"></code></td>
</tr>
</table>
<script>
document.getElementById("Example").innerHTML =
'var i = 1;<br>' +
'var x = 0;<br>' +
'while (i<=4) {<br>' +
' x = x + i;<br>' +
' i++;<br>' +
'}';
var i = 1;
var x = 0;
while (i<=4) {
x = x + i;
i++;
}
document.getElementById("Result").innerHTML = x;
</script>
</body>
</html>
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