Javascript 如何用 RegExp 替换字符串

Question

我有这个字符串

"red col.  yellow;   col.  black;  col.  green; orange; col. white; blue col. purple;"

我需要得到黄色、黑色、绿色、白色、紫色，只是没有“col”的颜色。和 ';'并将此字符串更改为:

 "red col. < a>yellow<\a> ; col. < a>black<\a> ; col. < a>green<\a>; orange; col. <a>white<\a>; blue; col. < a>purple<\a>;"

如何使用 javascript reg exp 来实现它，请帮忙

Answer 1

使用/\w+(?=;)/g来匹配以;和String.replace()结尾的单词将匹配项替换为您想要的内容:

const str = 'red col.  yellow;   col.  black;  col.  green; orange; col. white; blue col. purple;';

const result = str.replace(/\w+(?=;)/g, match => '<a>' + match + '</a>');

console.log(result);

对于特定颜色:

const str = 'red col.  yellow;   col.  black;  col.  green; orange; col. white; blue col. purple;';

const colors = ["yellow", "black", "green", "white", "purple"];

const exp = new RegExp(colors.join('|'), 'g');

const result = str.replace(exp, match => '<a>' + match + '</a>');

console.log(result);