js中split()

在JavaScript中，split()是一个字符串方法，用于将一个字符串拆分成一个字符串数组，根据指定的分隔符将原始字符串分割为多个子字符串。split()方法可以接受一个参数作为分隔符，也可以不传参数，默认使用空格作为分隔符。

例如，使用split()方法将一个字符串按照空格分割成单个字符的数组可以这样写：

var str = "How are you doing today?";
var n = str.split("");
console.log(n); // 输出：["H", "o", "w", " ", "a", "r", "e", " ", "y", "o", "u", " ", "d", "o", "i", "n", "g", " ", "t", "o", "d", "a", "y", "?"]

如果想按照特定的字符作为分隔符，可以将该字符作为split()方法的参数传入，例如使用字母"o"作为分隔符：

var str = "How are you doing today?";
var n = str.split("o");
console.log(n); // 输出：["H", "w are y", "u d", "ing t", "day?"]

需要注意的是，split()方法返回的是一个字符串数组，每个子字符串是根据分隔符进行分割后得到的。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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