雪月欧尼酱!

Document 1秒内多点几次会有不一样的结果

      var h1 = document.querySelector('h1')
      var btn = document.querySelector('button')

      // 死循环指定的时间
      function delay(duration) {
        var start = Date.now()
        while (Date.now() - start < duration) {}
      }

      let count = 1
      btn.onclick = function () {
        h1.textContent = '雪月真帅！+' + count++
        delay(1000)
      }