Question

下面是我试图用JavaScript做的事情。

如果我有像

这样的字符串

str = "how are you? hope you are doing good" ;

现在我想把它分开吗？（或。或！）但我不想失去“？”。相反，我想在问号之后打破字符串，这样问号就是我们拥有的第一个分段。之后呢？或/或！需要有一个\ s（空格）才能将其分成段

after splitting str what should I get is

["how are you?","hope you are doing good"]

我不确定是否可以使用Javascript split（）函数完成，请帮忙。

Answer 1

str.match(/\S[^?]*(?:\?+|$)/g)

["how are you?", "hope you are doing good"]

Answer 2

我能看到的最简单，最直接的方式就是失去“？”并将其添加回来：

var parts, n;
parts = str.split("?");
for (n = parts.length - 2; n >= 0; --n) { // Skip the last one
    parts[n] += "?";
}
if (str.charAt(str.length-1) == "?") {    // If it ended with "?", add it back
    parts[parts.length-1] += "?";
}

但是，通过RegExp可以有一种方法。修改已移除我的，S.Mark's regex 更好。

Answer 3

...

var str = "how are you? hope you are doing good";
var data = str.split('?');
data[0] += '?';

alert(data[0]); // result: how are you?
alert(data[1]); // result: hope you are doing good

Answer 4

一种选择是使用正则表达式，如：

str = "how are you? hope you are doing good";
var tokens = str.split(/(\?)/)

但是这会在他们自己的标记中产生问号：how are you,?, hope you are,?, doing good

更好的选择是：

var tokens = str.match(/[^?]+\?*/g)

这也会保留多个问号："hello??? how are you?"

Answer 5

如果JS支持regexp look-behinds你所需要的只是由/(?<=\?)/分割，但不幸的是它没有。但是，您可以使用match()函数轻松获得相同的行为：

var str = "how are you? hope you are doing good";
var data = str.match(/(?!$)[^?]*\??/g);

会给你["how are you?", " hope you are doing good"]

Answer 6

另一个想法：

var str = "how are you? hope you are doing good",
    strsplit = str.split('?').join('?#').split('#');
alert(strsplit) //=> how are you?, hope you are doing good

或（根据kobi的答案和评论）

var str = "how are you? All right?? Hope so???";
alert(str.replace(/([\?(1,}][^\?$])/g,'$1#!#').split(' #!#'));
  //=>how are you?,All right??,Hope so???

用javascript分割

6 个答案: