如果存在空格，则每个下划线如何将字符串拆分为数组

时间： 2024-11-11 admin IT培训

我想基于string将array拆分为JavaScript中的four conditions

首先，我只考虑two underscore之间是否有一个词，例如_i am 4 word_
第二，如果没有underscore，那么我认为spaces
两个下划线之间的第三string，因为数组将仍然是第一个入门下划线。
positions的第四个不应更改（the order）。

示例：

const str = "Hi dear, _How are _ you? _ I missed you_. please _  come back, to me _ . _قبول است؟ _";

应该完全是这样：

const splitedStr = ['Hi', 'dear', '_How are', 'you?', '_I missed you' '.', 'please', '_come back, to me', '.', 'قبول است؟'];

回答如下：怎么样？

function mySplit(str) {
  var result = [];
  str.split("_").forEach((str, index, arr) => {
    if (index % 2 === 0 || index === arr.length - 1) {
      result.push(...str.trim().split(" "));
    } else {
      result.push("_" + str.trim());
    }
  });
  if (str[0] === "_")
    result.shift();
  if (str[str.length - 1] === "_")
    result.pop();
  return result;
}
const tests = [
"Hi dear, _How are _ you? _ I missed you_. please _  come back, to me _ ._good dear",
"Hi dear, _How are _ you? _ I missed you_. please _  come back, to me _ ._good dear_",
"",
"_",
"should double underscores __ <--be like this or empty?",
"outside words _inside words_",
"_apple banana pear_",
"only one _ underscore here"
];
for (i in tests) {
  console.log(`${i}:`, mySplit(tests[i]).join("|"));
}