javascript - 正则表达式，从字符串中提取坐标

Question

JavaScript， 我想使用正则表达式从字符串中提取坐标。 这是我的字符串，包括空格和换行符，

          127.518037,37.834511
          127.518037,37.834511
          127.518103,37.834808
          127.518103,37.834808
          127.518169,37.835209
          127.518169,37.835209
          127.518147,37.835558
          127.518147,37.835558
          127.518059,37.835750
          127.518059,37.835750
          127.518081,37.835976
          127.518081,37.835976
          127.518411,37.836412
          127.518411,37.836412
          127.518697,37.836761
          127.518697,37.836761
          127.518719,37.837198
          127.518719,37.837198
          127.518741,37.837669
          127.518741,37.837669
          127.518477,37.838087
          127.518477,37.838087
          127.518433,37.838401
          127.518433,37.838401

我已经这样尝试过，但结果不是我想要的。

var coords = item.split(/\s/);
for( item in coords){
    coords_list = item.split(/,/);
}

坐标列表结果，

["127.518037,37.834511", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "127.518037,37.834511", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "127.518103,37.834808", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "127.518103,37.834808", "", "", "", "", "", "", "", "", "", "", "", "", "", "", 
...

有什么想法，帮忙~

Answer 1

尝试拆分:

/[\s,]+/

字符类[\s,]匹配任何空白字符或逗号，+告诉它匹配所述类一次或多次。这样，您的分割数组中就不会出现空字符串。

或者分两步进行，但首先在 \s+ 上分割，而不是单个 \s:

以下内容:

var text = 
"         127.518037,37.834511\n" + 
"          127.518037,37.834511\n" + 
"          127.518103,37.834808\n" + 
"          127.518103,37.834808\n" + 
"          127.518169,37.835209\n" + 
"          127.518169,37.835209\n" + 
"          127.518147,37.835558\n" + 
"          127.518147,37.835558\n" + 
"          127.518059,37.835750\n" + 
"          127.518059,37.835750\n" + 
"          127.518081,37.835976\n" + 
"          127.518081,37.835976\n" + 
"          127.518411,37.836412\n" + 
"          127.518411,37.836412\n" + 
"          127.518697,37.836761\n" + 
"          127.518697,37.836761\n" + 
"          127.518719,37.837198\n" + 
"          127.518719,37.837198\n" + 
"          127.518741,37.837669\n" + 
"          127.518741,37.837669\n" + 
"          127.518477,37.838087\n" + 
"          127.518477,37.838087\n" + 
"          127.518433,37.838401\n" + 
"          127.518433,37.838401";

var coords = text.split(/\s+/);
for(item in coords){
  var coords_list = coords[item].split(/,/);
  print(coords_list);
}

将打印:

127.518037,37.834511
127.518037,37.834511
127.518103,37.834808
127.518103,37.834808
127.518169,37.835209
127.518169,37.835209
127.518147,37.835558
127.518147,37.835558
127.518059,37.835750
127.518059,37.835750
127.518081,37.835976
127.518081,37.835976
127.518411,37.836412
127.518411,37.836412
127.518697,37.836761
127.518697,37.836761
127.518719,37.837198
127.518719,37.837198
127.518741,37.837669
127.518741,37.837669
127.518477,37.838087
127.518477,37.838087
127.518433,37.838401
127.518433,37.838401

可以在 IDEone 上进行测试.