Several ways JavaScript removes the last character of a string

String: string s = "1,2,3,4,5,"

Goal: Delete the last ","

Method:

1, the most used is substring, this is what I have been using

S=s.substring (0,s.length-1)

2, with RTrim, this I originally only know to remove the last space, also did not carefully read the other usage, only found that can be directly trim off some characters

S=s.tostring (). RTrim (', ')

3, with trimend, this thing and RTrim almost, the difference is that this pass is a character array, and RTrim can be any valid string

S=s.trimend (', ')

If you want to delete "5," you need to write this

char[]mychar={' 5 ', ', '};

S=s.trimend (MyChar);

S= "1,2,3,4"

Similar functions:

Trimstart,ltrim, etc.

There is also a trimtosize that has a slight benefit in improving performance ....

String. TrimEnd (). Remove (String. Length-2, 1)

String. Remove ()

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Several ways JavaScript removes the last character of a string