Prevent iPhone from zooming form? [duplicate]

Answer 1

Setting the font size works perfectly for input elements, but not for select elements for me. For select tags, I need to actively disable viewport zoom when the user starts interacting with the select element, and then reenable it on finish.

//the mousedown event seems to be the one that does the trick, versus 'focus', because focus fires after the zoom already happens.
$('select').mousedown(function(){
  $('meta[name=viewport]').remove();
  $('head').append('<meta name="viewport" content="width=device-width, maximum-scale=1.0, user-scalable=0">');
})

$('select').focusout(function(){
  $('meta[name=viewport]').remove();
  $('head').append('<meta name="viewport" content="width=device-width, initial-scale=yes">' );
})

Answer 2

<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=0"/>

Not working anymore on iOS10.0.1

font-size:16px works

Answer 3

For iOS, you can avoid zooming of input elements by simply allocating a font size to them that's considered sufficient by the OS (>=16px), thus avoiding the need to zoom, e.g.:

input, select, textarea {
    font-size: 16px;
}

It's a solution also utilized by various frameworks and allows you to avoid the use of a meta tag.

Answer 4

This might be helpful to look at:

Disable Auto Zoom in Input "Text" tag - Safari on iPhone

You'd basically need to capture the event of tapping on a form element, then not run the default iOS action of zooming in, but still allowing it to zoom for the rest of the page.

Edit:

The link mentions,

2) You can dynamically change the META viewport tag using javascript (see Enable/disable zoom on iPhone safari with Javascript?)

To elaborate:

1. Viewport meta tag is set to allow zooming
2. User taps on form element, changes meta tag to disable zooming
3. Upon pressing done, viewport is changed to allow zoom

And if you can't change the tag when clicking on a form element, put a div that mimics the form element that when you press it, it changes the tag, then calls the input.

Answer 5

here is the jQuery Solution works well for me.

device_type = (ua.match(/iPad/i) || ua.match(/iPhone/)) ? "touchstart" : "click";
if(device_type === "touchstart" ){
$('head').append('<style type="text/css">input,  select, textarea {font-size: 16px;}</style>');
}

Answer 6

This can be prevented by setting font-size:16px to all input fields.