如何将字符串/标题中的最后三个单词换行

Question

我正在尝试从将成为网站标题的字符串中包装最后三个单词。我正在尝试使用 split 方法和 pop 但没有得到它。 var text = "This is an example text sentence"我想像这样查看 html 这是一个示例文本句子var split = text.split(" ");var last = split.pop() // but it gives me only the last word text.join(" ") + (text.length > 0 ?' <span class="text-stroke">' + last + "</span>" : last)

Answer 1

使用正则表达式匹配\s+\S+（空格，后跟非空格）任意次数，匹配一个单词，后跟$（字符串的末尾）：

var text = "This is an example text sentence"

const newHTML = text.replace(

  /(?:\s+\S+){3}$/,

  '<span>$&</span>'

);

console.log(newHTML);

Answer 2

// split your text by spaces

let text = "This is an example text sentence.".split(/\s+/)

// rejoin your text

let nexText = text.slice(0, text.length-3).join(' ')

    + ' <span>'

    + text.slice(text.length-3).join(' ')

    + '</span>'

console.log(nexText)

// => This is an <span>example text sentence.</span>