Question

我在量角器脚本中有一个字符串'str'，如下所示。我需要将所有'aaaa'替换为换行符，并且每个新行的开头都不应包含逗号。

var str="51 Cart Road #408, Missouri City, TX 77459aaaa,90 South Street, Southern Pines, NC 87-541aaaa,01 Cart Road #7708, Missouri City, TX 7659aaaa";
str=str.replace(/aaaa/g,"\n");
console.log(str);

所以我将得到的结果为

51 Cart Road #408, Missouri City, TX 77459
,90 South Street, Southern Pines, NC 87-541
,01 Cart Road #7708, Missouri City, TX 7659

但是我的目标是获得

51 Cart Road #408, Missouri City, TX 77459
90 South Street, Southern Pines, NC 87-541
01 Cart Road #7708, Missouri City, TX 7659

所以我怎么只能从新行中删除逗号。谢谢。

Answer 1

var str="51 Cart Road #408, Missouri City, TX 77459aaaa,90 South Street, Southern Pines, NC 87-541aaaa,01 Cart Road #7708, Missouri City, TX 7659aaaa";
str=str.replace(/aaaa,?/g,"\n");
console.log(str);

Answer 2

使用aaaa,

分割字符串

使用\n

加入数组

var str="51 Cart Road #408, Missouri City, TX 77459aaaa,90 South Street, Southern Pines, NC 87-541aaaa,01 Cart Road #7708, Missouri City, TX 7659aaaa";

str = str.split('aaaa,').join('\n');

console.log(str);

编辑：看来上一个aaaa没有使用上面的代码删除。更新：

使用aaaa分割字符串映射数组以删除第一个字符使用\n

重新加入阵列

var str="51 Cart Road #408, Missouri City, TX 77459aaaa,90 South Street, Southern Pines, NC 87-541aaaa,01 Cart Road #7708, Missouri City, TX 7659aaaa";

str = str.split('aaaa').map(s => s.slice(1)).join('\n');

console.log(str);

Answer 3

您可以使用匹配“ aaaa”或“ aaaa”的正则表达式，然后将其替换为“ \ n”

var str="51 Cart Road #408, Missouri City, TX 77459aaaa,90 South Street, Southern Pines, NC 87-541aaaa,01 Cart Road #7708, Missouri City, TX 7659aaaa";
str=str.replace(/aaaa,?/g,"\n");
console.log(str);

Answer 4

var str="51 Cart Road #408, Missouri City, TX 77459aaaa,90 South Street, Southern Pines, NC 87-541aaaa,01 Cart Road #7708, Missouri City, TX 7659aaaa";

str = str.toString().replace(/aaaa,/g, '\n');

console.log(str);

确保在.replace（）之前先添加.toString（）

我们如何仅从JS中的新行中删除逗号

4 个答案: