只保留字符串中的前n个字符？ [英] Keep only first n characters in a string?

问题描述

JavaScript中是否有一种方法可以删除字符串的结尾？

Is there a way in JavaScript to remove the end of a string?

我只需保留字符串的前8个字符并删除其余字符。

I need to only keep the first 8 characters of a string and remove the rest.

推荐答案

您正在寻找JavaScript的字符串方法 substring

You are looking for JavaScript's String method substring

例如

'Hiya how are you'.substring(0,8);

返回从第一个字符开始并在第9个字符之前结束的字符串 - 即'Hiya how' 。

Which returns the string starting at the first character and finishing before the 9th character - i.e. 'Hiya how'.

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