javascript - 如何使用正则表达式匹配拆分文本

Question

从这种文字开始；

var txt = "hello [a14] world, and [b74] some more [h85], ..."

我期待的结果

var arr = 
  [ "hello "
  , "[a14]"
  , " world, and "
  , "[b74]"
  , " some more "
  , "[h85]"
  , ", ..."
  ] 

到目前为止我已经尝试过，但是掌握正则表达式对我来说仍然很难......

let txt = "hello [a14] world, and [b74] some more [h85], ..."

let arr = txt.match(/(\[(.*?)\])|(.*?)/g)

console.log( arr )

.as-console-wrapper { max-height: 100% !important; top: 0; }

Answer 1

您还可以尝试拆分环视:

var text = "hello [a14] world, and [b74] some more [h85], ...";
var arr = text.split(/(?=\[)|(?<=\])/);
console.log(arr);

这里的逻辑是，只要后面是[，就拆分字符串。或 ] 之前的内容.请注意，lookarounds 的宽度为零，因此模式 (?=\[)|(?<=\])匹配但在拆分时实际上不消耗输入中的任何文本。