浏览器禁止缩放

[better2021]

   // 浏览器禁止缩放
    window.onload = function() {
      document.addEventListener('touchstart', function(event) {
        if (event.touches.length > 1) {
          event.preventDefault()
        }
      })
      document.addEventListener('gesturestart', function(event) {
        event.preventDefault()
      })
    }