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I noticed that if i use <input type="number" /> the leading zeros are not removed. I also saw a lot of discussion on how keeping leading zeros.
For example "000023" and "23" are the same number and i think that it doesn't make sense keeping those zeros.
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If it is set to type "text", there are no issues, leading zeros are removed as expected. In both cases, a console. log() shows that the value stored in state is indeed stripped of leading zeros (a single 0 is allowed as a value.)
To remove the leading zeros from a number, call the parseInt() function, passing it the number and 10 as parameters, e.g. parseInt(num, 10) . The parseInt function parses a string argument and returns a number with the leading zeros removed.
Use the lstrip() Function Along With List Comprehension to Remove Leading Zeros in a String in Python. The lstrip() can be utilized to remove the leading characters of the string if they exist. By default, a space is the leading character to remove in the string.
keypress(function(evt) { if (evt. which == "0".
I'm going to give an example with react usage. It uses state which store the value of the field. But, I think u can replace it with whatever variable you like.
<input type='number' value={Number(this.state.myNumber).toString()}/>
In my case, myNumber stores a year number. This way, the year 2018 (for example) won't be displayed mistakenly as 02018.
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