javascript - 字符串中仅保留前n个字符？(Keep only first n characters in a string?)

Question

Is there a way in JavaScript to remove the end of a string?(JavaScript中有没有一种方法可以删除字符串的结尾？)

I need to only keep the first 8 characters of a string and remove the rest.(我只需要保留字符串的前8个字符，然后删除其余的字符。)   ask by user978905 translate from so

Answer 1

You are looking for JavaScript's String method substring(您正在寻找JavaScript的String方法substring)

eg(例如) 'Hiya how are you'.substring(0,8); Which returns the string starting at the first character and finishing before the 9th character - ie 'Hiya how'.(它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”。) substring documentation(子字符串文档)