javascript - 使用字符串和长度的组合分割字符串

Question

我有一个如下所示的字符串，我想使用数字和“+”来分割它，我尝试使用下面的代码，

输入字符串: 20001+20002+20003+20005+20019+20035+20009+20011+20015+20006+20020+20047+20048+20050+20049+204044+22407+20052+20057+20058+ 20059+20063+20065+20067+20068+ 20070+20072+20073+20075+20076+20078+20081+20084+20085+20086+20140+21954+206171+206170+206175+20093+206168+206177+206172+2 0098+206167+20107+20053+20054+20056+ 20108+20109+20110+20112+20115+20117+20119+20124+20126+20131+20132+20136+20141+20344+20345+20346+20348+20349+20355+20356.A

代码:

First found the len of the string,
var str1 = 20001+20002+20003+20005+20019+20035+20009+20011+20015+20006+20020+20047+20048+20050+20049+204044+22407+20052+20057+20058+20059+20063+20065+20067+20068+20070+20072+20073+20075+20076+20078+20081+20084+20085+20086+20140+21954+206171+206170+206175+20093+206168+206177+206172+20098+206167+20107+20053+20054+20056+20108+20109+20110+20112+20115+20117+20119+20124+20126+20131+20132+20136+20141+20344+20345+20346+20348+20349+20355+20356.A
str2 = str1.length;
if (str2 > '400') {
  var str3 = str1.split("+", 100);
}else{
  var str3 = str1
}

期望的输出:

str3[0] = 20001+20002+20003+20005+20019+20035+20009+20011+20015+20006+20020+20047+20048+20050+20049+204044+22407
str3[1] = 20052+20057+20058+20059+20063+20065+20067+20068+20070+20072+20073+20075+20076+20078+20081+20084+20085
str3[2] = 20086+20140+21954+206171+206170+206175+20093+206168+206177+206172+20098+206167+20107+20053+20054
str3[3] = 20056+20108+20109+20110+20112+20115+20117+20119+20124+20126+20131+20132+20136+20141+20344+20345
str3[4] = 20346+20348+20349+20355+20356.A

这里的长度默认为 100，并且应该根据字符串减少而不是增加(需要帮助来完成此操作)

请帮我提供一些指导

Answer 1

与 Nina Scholz 的答案几乎相同，但略有不同。从 0 开始，然后在接下来的 100 个字符后查找“+”，然后将其复制到结果数组中。从“+”后面的字符重新开始，直到字符串用完。

var s = '20001+20002+20003+20005+20019+20035+20009+20011+20015+20006+20020+20047+20048+20050+20049+204044+22407+20052+20057+20058+20059+20063+20065+20067+20068+20070+20072+20073+20075+20076+20078+20081+20084+20085+20086+20140+21954+206171+206170+206175+20093+206168+206177+206172+20098+206167+20107+20053+20054+20056+20108+20109+20110+20112+20115+20117+20119+20124+20126+20131+20132+20136+20141+20344+20345+20346+20348+20349+20355+20356.A';

var start = 0,
    min = 100,
    pos = 0,
    result = [];
while (pos != -1) {
  pos = s.indexOf('+', start + min);
  result.push(s.substring(start, pos == -1? s.length : pos));
  start = pos+1;
}

console.log(result);