Right to Left input mask
<p>I am using the digitalbush input mask for time. Currently, I have it set up as 0:00:00. When you enter the numbers, it populates from left to right. So adding a 1 would result in 1:00:00 ... adding another 1 results in 1:10:00. I would like it to go from right to left so a 1 would result in 0:00:01 .... adding another 1 would result in 0:00:11. 
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I have attached dir="rtl" to my input, which on it's own just formats the placeholder text to the right, doesn't affect the way the numbers are input. When I add numericInput:true, the numbers populate from right to left, exactly as I want, but it doesn't keep the placeholder values - it goes to _:<strong>:</strong>.
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Could someone please provide direction/know if this is possible? I found this <a href="https://stackoverflow.com/questions/26476344/right-to-left-mask-input-with-jquery">Right to left mask input with jQuery</a> but can't seem to make it work. Thanks!</p>