HTML長押しで出てくるAlertView等を封印します。

prevent.css

* {
  /* prevent callout to copy image, etc when tap to hold */
  -webkit-touch-callout: none;
  /* prevent webkit from resizing text to fit */
  -webkit-text-size-adjust: none;
  /* make transparent link selection, adjust last value opacity 0 to 1.0 */
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  /* prevent copy paste, to allow, change 'none' to 'text' */
  -webkit-user-select: none;
}
 
input {
  -webkit-user-select: text;
}