切掉一部分字符串 [英] cut out part of a string

问题描述

说，我有一个字符串

"hello is it me you're looking for"

我想删除部分字符串并返回新字符串，例如

I want to cut part of this string out and return the new string, something like

s = string.cut(0,3);

s现在等于：

"lo is it me you're looking for"

编辑：可能不是0到3.可能是5到7。

EDIT: It may not be from 0 to 3. It could be from 5 to 7.

s = string.cut(5,7);

将返回

"hellos it me you're looking for"

推荐答案

你快到了。你想要的是：

You're almost there. What you want is:

http：/ /www.w3schools.com/jsref/jsref_substr.asp

所以，在你的例子中：

Var string = "hello is it me you're looking for";
s = string.substr(3);

因为只提供一个开始（第一个arg）从该索引到字符串的结尾。

As only providing a start (the first arg) takes from that index to the end of the string.

更新，如下所示：

function cut(str, cutStart, cutEnd){
  return str.substr(0,cutStart) + str.substr(cutEnd+1);
}

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