如何使用 Javascript 删除换行符和制表符的所有实例

Question

我正在抓取一个网站，需要从我的字符串中删除所有 /n 和 /t。

我已经尝试了以下代码：

item.post_category = [];
 Array.from($doc.find('h6.link')).forEach(function(link){ 
            console.log(link.textContent.replace(/\t+\n+/gm, ""));        
            item.post_category.push(link.textContent);
          })
//this removes the linebreaks but not the tabs

这是我必须迭代的多个示例数组：

["\n\t\t\t\t\tJune 15, 2021 • \n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\tFamily,\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\tGender Equality,\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\tIn the News\n\t\t\t\t"]

["\n\t\t\t\t\tJune 13, 2020 • \n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\tIn the News\n\t\t\t\t"]

["\n\t\t\t\t\tJuly 5, 2021 • \n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\tNews\n\t\t\t\t"]

理想情况下，我希望我的数组看起来像这样。删除 date 和 \n 和 \t。

["Family,Gender Equality,In the News"]
["In the News"]
["News"]

Answer 1

有数百种方法可以做到这一点，您可以根据需要使用正则表达式或拆分。

这是可能的解决方案之一：

let str = "\n\t\t\t\t\tJune 15, 2021 • \n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\tFamily,\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\tGender Equality,\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\tIn the News\n\t\t\t\t"

// Remove all new lines and tabs with a regex. You could also add '\r\n' if necessary.
str = str.replace(/(\n|\t)/gm, '');

// Here we assume that your string will 
// always contain the date followed by this character: •. 
// So we split according to this character, and we select 
// the second item of the table, which corresponds to the text without the date.
let result = str.split('•')[1].trim()

console.log(result) // prints 'Family,Gender Equality,In the News'