vue h5移动端禁止缩放代码

<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">

<script>
window.onload = function() {
 document.addEventListener('touchstart', function(event) {
 if (event.touches.length > 1) {
  event.preventDefault()
 }
 })
 document.addEventListener('gesturestart', function(event) {
 event.preventDefault()
 })
}
</script>