There are many ways to accomplish this in js but the following is the one I found to be the best: Let’s say you need to pad a number with leading zeros so the total digits of the number will be 5, simply do a
String('00000'+n).slice(-5);
n is the number to be padded.
[ credit goes to http://gugod.org/2007/09/padding-zero-in-javascript.html ]
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