我有这个字符串
"red col. < a>yellow<\a> ; col. < a>black<\a> ; col. < a>green<\a>; orange; col. <a>white<\a>; blue; col. < a>purple<\a>;"
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此:
multiple
如何使用javascript reg exp做到这一点,请帮助
答案 0 :(得分:4)
使用/\w+(?=;)/g
匹配以;
结尾的单词,并使用String.replace()将匹配项替换为您想要的匹配项:
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);
答案 1 :(得分:0)
您可以像这样使用捕获组来replace
:(不确定这是最有效的方法)
const str = "red col. yellow; col. black; col. green; orange; col. white; blue col. purple;"
const newStr = str.replace(/(?<=col.)(\s+)(\w+);/g, "$1<a>$2</a>;")
console.log(newStr)