prevent zoom on mobile html code example
Example 1: lock the zoom html
<meta name='viewport'
content='width=device-width, initial-scale=1.0, maximum-scale=1.0,
user-scalable=0' >
Example 2: block zoom js mobile
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />