js 正则匹配class

const regex = /class=["']([^"']+)["']/g;

const htmlString = '<div class="my-class another-class"></div>';
let match;
const classes = [];

while ((match = regex.exec(htmlString)) !== null) {
  classes.push(match[1]); // match[1] 是捕获组中的内容，即class属性的值
}

console.log(classes); // 输出: ["my-class another-class"]

const classRegex = /\bclass\b\s*=\s*["']([^"']+)["']/g;
const singleClassRegex = /\b(\w+)\b/g;

const htmlString = '<div class="my-class another-class"></div>';
let match;
const allClasses = [];

while ((match = classRegex.exec(htmlString)) !== null) {
  const classes = match[1].split(' ');
  allClasses.push(...classes);
}

const uniqueClasses = [...new Set(allClasses)]; // 去重

console.log(uniqueClasses); // 输出: ["my-class", "another-class"]