javascript - JavaScript截断/切片/修剪掉字符串中的最后一个字符(JavaScript chop/slice/trim off last character in string)

Question

I have a string, 12345.00 , and I would like it to return 12345.0 .

(我有一个字符串12345.00 ，我希望它返回12345.0 。)

I have looked at trim , but it looks like it is only trimming whitespace and slice which I don't see how this would work.

(我已经看过trim ，但是看起来它只是在修剪空白和slice ，我看不到它如何工作。)

Any suggestions?

(有什么建议么？)

  ask by Phill Pafford translate from so

Answer 1

You can use the substring function:

(您可以使用substring函数：)

 let str = "12345.00"; str = str.substring(0, str.length - 1); console.log(str); 

This is the accepted answer, but as per the conversations below, the slice syntax is much clearer:

(这是公认的答案，但是根据下面的对话， 切片语法更加清晰：)

 let str = "12345.00"; str = str.slice(0, -1); console.log(str);