JavaScript切断/切片/修剪字符串中的最后一个字符 [英] JavaScript chop/slice/trim off last character in string

问题描述

我有一个字符串， 12345.00 ，我希望它返回 12345.0 。

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

我看过 trim ，但看起来它只是修剪空白和切片我不明白这是怎么回事。有什么建议吗？

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. Any suggestions?

推荐答案

你可以使用 substring function：

You can use the substring function:

var str = "12345.00";
str = str.substring(0, str.length - 1); // "12345.0"

这是接受的答案，但根据下面的对话， slice 语法更加清晰：

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

var str = "12345.00";
str = str.slice(0, -1); // "12345.0"

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