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<title>JavaScript for loop iteration param optional</title>
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<pre> <!-- Use pre element for work document.writeln() method -->
<script>
var num = 1;
for( ; ; ){
if (num <= 10)
document.writeln(num + ": iteration");
else
break;
num++;
}
document.writeln("End of for loop");
</script>
</pre>
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