Question

的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，包括空格和新行，

          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

我试过这样，但结果不是我想要的。

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

coords_list结果，

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

任何想法，帮助〜

Answer 1

尝试拆分：

/[\s,]+/

字符类[\s,]匹配任何空格字符或逗号，+告诉它与所述类匹配一次或多次。这样你就不会在split数组中得到空字符串了。

或者分两步完成，但先在\s+而不是\s分开：

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。

正则表达式，从字符串中提取坐标

1 个答案: