WordPress/wp-admin/js/common.js

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/* global setUserSetting, ajaxurl, commonL10n, alert, confirm, pagenow */
var showNotice, adminMenu, columns, validateForm, screenMeta;
( function( $, window, undefined ) {
// Removed in 3.3.
// (perhaps) needed for back-compat
adminMenu = {
init : function() {},
fold : function() {},
restoreMenuState : function() {},
toggle : function() {},
favorites : function() {}
};
// show/hide/save table columns
columns = {
init : function() {
var that = this;
$('.hide-column-tog', '#adv-settings').click( function() {
var $t = $(this), column = $t.val();
if ( $t.prop('checked') )
that.checked(column);
else
that.unchecked(column);
columns.saveManageColumnsState();
});
},
saveManageColumnsState : function() {
var hidden = this.hidden();
$.post(ajaxurl, {
action: 'hidden-columns',
hidden: hidden,
screenoptionnonce: $('#screenoptionnonce').val(),
page: pagenow
});
},
checked : function(column) {
$('.column-' + column).removeClass( 'hidden' );
this.colSpanChange(+1);
},
unchecked : function(column) {
$('.column-' + column).addClass( 'hidden' );
this.colSpanChange(-1);
},
hidden : function() {
return $( '.manage-column[id]' ).filter( ':hidden' ).map(function() {
return this.id;
}).get().join( ',' );
},
useCheckboxesForHidden : function() {
this.hidden = function(){
return $('.hide-column-tog').not(':checked').map(function() {
var id = this.id;
return id.substring( id, id.length - 5 );
}).get().join(',');
};
},
colSpanChange : function(diff) {
var $t = $('table').find('.colspanchange'), n;
if ( !$t.length )
return;
n = parseInt( $t.attr('colspan'), 10 ) + diff;
$t.attr('colspan', n.toString());
}
};
$(document).ready(function(){columns.init();});
validateForm = function( form ) {
return !$( form )
.find( '.form-required' )
.filter( function() { return $( 'input:visible', this ).val() === ''; } )
.addClass( 'form-invalid' )
.find( 'input:visible' )
.change( function() { $( this ).closest( '.form-invalid' ).removeClass( 'form-invalid' ); } )
.size();
};
// stub for doing better warnings
showNotice = {
warn : function() {
var msg = commonL10n.warnDelete || '';
if ( confirm(msg) ) {
return true;
}
return false;
},
note : function(text) {
alert(text);
}
};
screenMeta = {
element: null, // #screen-meta
toggles: null, // .screen-meta-toggle
page: null, // #wpcontent
init: function() {
this.element = $('#screen-meta');
this.toggles = $( '#screen-meta-links' ).find( '.show-settings' );
this.page = $('#wpcontent');
this.toggles.click( this.toggleEvent );
},
toggleEvent: function() {
var panel = $( '#' + $( this ).attr( 'aria-controls' ) );
if ( !panel.length )
return;
if ( panel.is(':visible') )
screenMeta.close( panel, $(this) );
else
screenMeta.open( panel, $(this) );
},
open: function( panel, button ) {
$( '#screen-meta-links' ).find( '.screen-meta-toggle' ).not( button.parent() ).css( 'visibility', 'hidden' );
panel.parent().show();
panel.slideDown( 'fast', function() {
panel.focus();
button.addClass( 'screen-meta-active' ).attr( 'aria-expanded', true );
});
$( document ).trigger( 'screen:options:open' );
},
close: function( panel, button ) {
panel.slideUp( 'fast', function() {
button.removeClass( 'screen-meta-active' ).attr( 'aria-expanded', false );
$('.screen-meta-toggle').css('visibility', '');
panel.parent().hide();
});
$( document ).trigger( 'screen:options:close' );
}
};
/**
* Help tabs.
*/
$('.contextual-help-tabs').delegate('a', 'click', function(e) {
var link = $(this),
panel;
e.preventDefault();
// Don't do anything if the click is for the tab already showing.
if ( link.is('.active a') )
return false;
// Links
$('.contextual-help-tabs .active').removeClass('active');
link.parent('li').addClass('active');
panel = $( link.attr('href') );
// Panels
$('.help-tab-content').not( panel ).removeClass('active').hide();
panel.addClass('active').show();
});
$(document).ready( function() {
var checks, first, last, checked, sliced, mobileEvent, transitionTimeout, focusedRowActions, $firstHeading,
lastClicked = false,
pageInput = $('input.current-page'),
currentPage = pageInput.val(),
isIOS = /iPhone|iPad|iPod/.test( navigator.userAgent ),
isAndroid = navigator.userAgent.indexOf( 'Android' ) !== -1,
isIE8 = $( document.documentElement ).hasClass( 'ie8' ),
$document = $( document ),
$window = $( window ),
$body = $( document.body ),
$adminMenuWrap = $( '#adminmenuwrap' ),
$wpwrap = $( '#wpwrap' ),
$adminmenu = $( '#adminmenu' ),
$overlay = $( '#wp-responsive-overlay' ),
$toolbar = $( '#wp-toolbar' ),
$toolbarPopups = $toolbar.find( 'a[aria-haspopup="true"]' ),
$sortables = $('.meta-box-sortables'),
wpResponsiveActive = false,
$adminbar = $( '#wpadminbar' ),
lastScrollPosition = 0,
pinnedMenuTop = false,
pinnedMenuBottom = false,
menuTop = 0,
menuIsPinned = false,
height = {
window: $window.height(),
wpwrap: $wpwrap.height(),
adminbar: $adminbar.height(),
menu: $adminMenuWrap.height()
};
// when the menu is folded, make the fly-out submenu header clickable
$adminmenu.on('click.wp-submenu-head', '.wp-submenu-head', function(e){
$(e.target).parent().siblings('a').get(0).click();
});
$('#collapse-menu').on('click.collapse-menu', function() {
var body = $( document.body ), respWidth, state;
// reset any compensation for submenus near the bottom of the screen
$('#adminmenu div.wp-submenu').css('margin-top', '');
if ( window.innerWidth ) {
// window.innerWidth is affected by zooming on phones
respWidth = Math.max( window.innerWidth, document.documentElement.clientWidth );
} else {
// IE < 9 doesn't support @media CSS rules
respWidth = 961;
}
if ( respWidth && respWidth < 960 ) {
if ( body.hasClass('auto-fold') ) {
body.removeClass('auto-fold').removeClass('folded');
setUserSetting('unfold', 1);
setUserSetting('mfold', 'o');
state = 'open';
} else {
body.addClass('auto-fold');
setUserSetting('unfold', 0);
state = 'folded';
}
} else {
if ( body.hasClass('folded') ) {
body.removeClass('folded');
setUserSetting('mfold', 'o');
state = 'open';
} else {
body.addClass('folded');
setUserSetting('mfold', 'f');
state = 'folded';
}
}
$( document ).trigger( 'wp-collapse-menu', { state: state } );
});
/**
* Ensure an admin submenu is within the visual viewport.
*
* @since 4.1.0
*
* @param {jQuery} $menuItem The parent menu item containing the submenu.
*/
function adjustSubmenu( $menuItem ) {
var bottomOffset, pageHeight, adjustment, theFold, menutop, wintop, maxtop,
$submenu = $menuItem.find( '.wp-submenu' );
menutop = $menuItem.offset().top;
wintop = $window.scrollTop();
maxtop = menutop - wintop - 30; // max = make the top of the sub almost touch admin bar
bottomOffset = menutop + $submenu.height() + 1; // Bottom offset of the menu
pageHeight = $wpwrap.height(); // Height of the entire page
adjustment = 60 + bottomOffset - pageHeight;
theFold = $window.height() + wintop - 50; // The fold
if ( theFold < ( bottomOffset - adjustment ) ) {
adjustment = bottomOffset - theFold;
}
if ( adjustment > maxtop ) {
adjustment = maxtop;
}
if ( adjustment > 1 ) {
$submenu.css( 'margin-top', '-' + adjustment + 'px' );
} else {
$submenu.css( 'margin-top', '' );
}
}
if ( 'ontouchstart' in window || /IEMobile\/[1-9]/.test(navigator.userAgent) ) { // touch screen device
// iOS Safari works with touchstart, the rest work with click
mobileEvent = isIOS ? 'touchstart' : 'click';
// close any open submenus when touch/click is not on the menu
$(document.body).on( mobileEvent+'.wp-mobile-hover', function(e) {
if ( $adminmenu.data('wp-responsive') ) {
return;
}
if ( ! $( e.target ).closest( '#adminmenu' ).length ) {
$adminmenu.find( 'li.opensub' ).removeClass( 'opensub' );
}
});
$adminmenu.find( 'a.wp-has-submenu' ).on( mobileEvent + '.wp-mobile-hover', function( event ) {
var $menuItem = $(this).parent();
if ( $adminmenu.data( 'wp-responsive' ) ) {
return;
}
// Show the sub instead of following the link if:
// - the submenu is not open
// - the submenu is not shown inline or the menu is not folded
if ( ! $menuItem.hasClass( 'opensub' ) && ( ! $menuItem.hasClass( 'wp-menu-open' ) || $menuItem.width() < 40 ) ) {
event.preventDefault();
adjustSubmenu( $menuItem );
$adminmenu.find( 'li.opensub' ).removeClass( 'opensub' );
$menuItem.addClass('opensub');
}
});
}
if ( ! isIOS && ! isAndroid ) {
$adminmenu.find( 'li.wp-has-submenu' ).hoverIntent({
over: function() {
var $menuItem = $( this ),
$submenu = $menuItem.find( '.wp-submenu' ),
top = parseInt( $submenu.css( 'top' ), 10 );
if ( isNaN( top ) || top > -5 ) { // the submenu is visible
return;
}
if ( $adminmenu.data( 'wp-responsive' ) ) {
// The menu is in responsive mode, bail
return;
}
adjustSubmenu( $menuItem );
$adminmenu.find( 'li.opensub' ).removeClass( 'opensub' );
$menuItem.addClass( 'opensub' );
},
out: function(){
if ( $adminmenu.data( 'wp-responsive' ) ) {
// The menu is in responsive mode, bail
return;
}
$( this ).removeClass( 'opensub' ).find( '.wp-submenu' ).css( 'margin-top', '' );
},
timeout: 200,
sensitivity: 7,
interval: 90
});
$adminmenu.on( 'focus.adminmenu', '.wp-submenu a', function( event ) {
if ( $adminmenu.data( 'wp-responsive' ) ) {
// The menu is in responsive mode, bail
return;
}
$( event.target ).closest( 'li.menu-top' ).addClass( 'opensub' );
}).on( 'blur.adminmenu', '.wp-submenu a', function( event ) {
if ( $adminmenu.data( 'wp-responsive' ) ) {
return;
}
$( event.target ).closest( 'li.menu-top' ).removeClass( 'opensub' );
}).find( 'li.wp-has-submenu.wp-not-current-submenu' ).on( 'focusin.adminmenu', function() {
adjustSubmenu( $( this ) );
});
}
// Move .notice, .updated and .error alert boxes. Don't move boxes designed to be inline.
$firstHeading = $( '.wrap > h1:first' );
// Back compatibility: if there is no H1, apply to first H2.
if ( ! $firstHeading.length ) {
$firstHeading = $( '.wrap h2:first' );
}
$firstHeading.nextAll( 'div.updated, div.error, div.notice' ).addClass( 'below-h2' );
$( 'div.updated, div.error, div.notice' ).not( '.below-h2, .inline' ).insertAfter( $firstHeading );
// Make notices dismissible
$( '.notice.is-dismissible' ).each( function() {
var $this = $( this ),
$button = $( '<button type="button" class="notice-dismiss"><span class="screen-reader-text"></span></button>' ),
btnText = commonL10n.dismiss || '';
// Ensure plain text
$button.find( '.screen-reader-text' ).text( btnText );
$this.append( $button );
$button.on( 'click.wp-dismiss-notice', function( event ) {
event.preventDefault();
$this.fadeTo( 100 , 0, function() {
$(this).slideUp( 100, function() {
$(this).remove();
});
});
});
});
// Init screen meta
screenMeta.init();
// check all checkboxes
$('tbody').children().children('.check-column').find(':checkbox').click( function(e) {
if ( 'undefined' == e.shiftKey ) { return true; }
if ( e.shiftKey ) {
if ( !lastClicked ) { return true; }
checks = $( lastClicked ).closest( 'form' ).find( ':checkbox' );
first = checks.index( lastClicked );
last = checks.index( this );
checked = $(this).prop('checked');
if ( 0 < first && 0 < last && first != last ) {
sliced = ( last > first ) ? checks.slice( first, last ) : checks.slice( last, first );
sliced.prop( 'checked', function() {
if ( $(this).closest('tr').is(':visible') )
return checked;
return false;
});
}
}
lastClicked = this;
// toggle "check all" checkboxes
var unchecked = $(this).closest('tbody').find(':checkbox').filter(':visible').not(':checked');
$(this).closest('table').children('thead, tfoot').find(':checkbox').prop('checked', function() {
return ( 0 === unchecked.length );
});
return true;
});
$('thead, tfoot').find('.check-column :checkbox').on( 'click.wp-toggle-checkboxes', function( event ) {
var $this = $(this),
$table = $this.closest( 'table' ),
controlChecked = $this.prop('checked'),
toggle = event.shiftKey || $this.data('wp-toggle');
$table.children( 'tbody' ).filter(':visible')
.children().children('.check-column').find(':checkbox')
.prop('checked', function() {
if ( $(this).is(':hidden') ) {
return false;
}
if ( toggle ) {
return ! $(this).prop( 'checked' );
} else if ( controlChecked ) {
return true;
}
return false;
});
$table.children('thead, tfoot').filter(':visible')
.children().children('.check-column').find(':checkbox')
.prop('checked', function() {
if ( toggle ) {
return false;
} else if ( controlChecked ) {
return true;
}
return false;
});
});
// Show row actions on keyboard focus of its parent container element or any other elements contained within
$( '#wpbody-content' ).on({
focusin: function() {
clearTimeout( transitionTimeout );
focusedRowActions = $( this ).find( '.row-actions' );
// transitionTimeout is necessary for Firefox, but Chrome won't remove the CSS class without a little help.
$( '.row-actions' ).not( this ).removeClass( 'visible' );
focusedRowActions.addClass( 'visible' );
},
focusout: function() {
// Tabbing between post title and .row-actions links needs a brief pause, otherwise
// the .row-actions div gets hidden in transit in some browsers (ahem, Firefox).
transitionTimeout = setTimeout( function() {
focusedRowActions.removeClass( 'visible' );
}, 30 );
}
}, 'td.has-row-actions' );
$('#default-password-nag-no').click( function() {
setUserSetting('default_password_nag', 'hide');
$('div.default-password-nag').hide();
return false;
});
// tab in textareas
$('#newcontent').bind('keydown.wpevent_InsertTab', function(e) {
var el = e.target, selStart, selEnd, val, scroll, sel;
if ( e.keyCode == 27 ) { // escape key
// when pressing Escape: Opera 12 and 27 blur form fields, IE 8 clears them
e.preventDefault();
$(el).data('tab-out', true);
return;
}
if ( e.keyCode != 9 || e.ctrlKey || e.altKey || e.shiftKey ) // tab key
return;
if ( $(el).data('tab-out') ) {
$(el).data('tab-out', false);
return;
}
selStart = el.selectionStart;
selEnd = el.selectionEnd;
val = el.value;
if ( document.selection ) {
el.focus();
sel = document.selection.createRange();
sel.text = '\t';
} else if ( selStart >= 0 ) {
scroll = this.scrollTop;
el.value = val.substring(0, selStart).concat('\t', val.substring(selEnd) );
el.selectionStart = el.selectionEnd = selStart + 1;
this.scrollTop = scroll;
}
if ( e.stopPropagation )
e.stopPropagation();
if ( e.preventDefault )
e.preventDefault();
});
if ( pageInput.length ) {
pageInput.closest('form').submit( function() {
// Reset paging var for new filters/searches but not for bulk actions. See #17685.
if ( $('select[name="action"]').val() == -1 && $('select[name="action2"]').val() == -1 && pageInput.val() == currentPage )
pageInput.val('1');
});
}
$('.search-box input[type="search"], .search-box input[type="submit"]').mousedown(function () {
$('select[name^="action"]').val('-1');
});
// Scroll into view when focused
$('#contextual-help-link, #show-settings-link').on( 'focus.scroll-into-view', function(e){
if ( e.target.scrollIntoView )
e.target.scrollIntoView(false);
});
// Disable upload buttons until files are selected
(function(){
var button, input, form = $('form.wp-upload-form');
if ( ! form.length )
return;
button = form.find('input[type="submit"]');
input = form.find('input[type="file"]');
function toggleUploadButton() {
button.prop('disabled', '' === input.map( function() {
return $(this).val();
}).get().join(''));
}
toggleUploadButton();
input.on('change', toggleUploadButton);
})();
function pinMenu( event ) {
var windowPos = $window.scrollTop(),
resizing = ! event || event.type !== 'scroll';
if ( isIOS || isIE8 || $adminmenu.data( 'wp-responsive' ) ) {
return;
}
if ( height.menu + height.adminbar < height.window ||
height.menu + height.adminbar + 20 > height.wpwrap ) {
unpinMenu();
return;
}
menuIsPinned = true;
if ( height.menu + height.adminbar > height.window ) {
// Check for overscrolling
if ( windowPos < 0 ) {
if ( ! pinnedMenuTop ) {
pinnedMenuTop = true;
pinnedMenuBottom = false;
$adminMenuWrap.css({
position: 'fixed',
top: '',
bottom: ''
});
}
return;
} else if ( windowPos + height.window > $document.height() - 1 ) {
if ( ! pinnedMenuBottom ) {
pinnedMenuBottom = true;
pinnedMenuTop = false;
$adminMenuWrap.css({
position: 'fixed',
top: '',
bottom: 0
});
}
return;
}
if ( windowPos > lastScrollPosition ) {
// Scrolling down
if ( pinnedMenuTop ) {
// let it scroll
pinnedMenuTop = false;
menuTop = $adminMenuWrap.offset().top - height.adminbar - ( windowPos - lastScrollPosition );
if ( menuTop + height.menu + height.adminbar < windowPos + height.window ) {
menuTop = windowPos + height.window - height.menu - height.adminbar;
}
$adminMenuWrap.css({
position: 'absolute',
top: menuTop,
bottom: ''
});
} else if ( ! pinnedMenuBottom && $adminMenuWrap.offset().top + height.menu < windowPos + height.window ) {
// pin the bottom
pinnedMenuBottom = true;
$adminMenuWrap.css({
position: 'fixed',
top: '',
bottom: 0
});
}
} else if ( windowPos < lastScrollPosition ) {
// Scrolling up
if ( pinnedMenuBottom ) {
// let it scroll
pinnedMenuBottom = false;
menuTop = $adminMenuWrap.offset().top - height.adminbar + ( lastScrollPosition - windowPos );
if ( menuTop + height.menu > windowPos + height.window ) {
menuTop = windowPos;
}
$adminMenuWrap.css({
position: 'absolute',
top: menuTop,
bottom: ''
});
} else if ( ! pinnedMenuTop && $adminMenuWrap.offset().top >= windowPos + height.adminbar ) {
// pin the top
pinnedMenuTop = true;
$adminMenuWrap.css({
position: 'fixed',
top: '',
bottom: ''
});
}
} else if ( resizing ) {
// Resizing
pinnedMenuTop = pinnedMenuBottom = false;
menuTop = windowPos + height.window - height.menu - height.adminbar - 1;
if ( menuTop > 0 ) {
$adminMenuWrap.css({
position: 'absolute',
top: menuTop,
bottom: ''
});
} else {
unpinMenu();
}
}
}
lastScrollPosition = windowPos;
}
function resetHeights() {
height = {
window: $window.height(),
wpwrap: $wpwrap.height(),
adminbar: $adminbar.height(),
menu: $adminMenuWrap.height()
};
}
function unpinMenu() {
if ( isIOS || ! menuIsPinned ) {
return;
}
pinnedMenuTop = pinnedMenuBottom = menuIsPinned = false;
$adminMenuWrap.css({
position: '',
top: '',
bottom: ''
});
}
function setPinMenu() {
resetHeights();
if ( $adminmenu.data('wp-responsive') ) {
$body.removeClass( 'sticky-menu' );
unpinMenu();
} else if ( height.menu + height.adminbar > height.window ) {
pinMenu();
$body.removeClass( 'sticky-menu' );
} else {
$body.addClass( 'sticky-menu' );
unpinMenu();
}
}
if ( ! isIOS ) {
$window.on( 'scroll.pin-menu', pinMenu );
$document.on( 'tinymce-editor-init.pin-menu', function( event, editor ) {
editor.on( 'wp-autoresize', resetHeights );
});
}
window.wpResponsive = {
init: function() {
var self = this;
// Modify functionality based on custom activate/deactivate event
$document.on( 'wp-responsive-activate.wp-responsive', function() {
self.activate();
}).on( 'wp-responsive-deactivate.wp-responsive', function() {
self.deactivate();
});
$( '#wp-admin-bar-menu-toggle a' ).attr( 'aria-expanded', 'false' );
// Toggle sidebar when toggle is clicked
$( '#wp-admin-bar-menu-toggle' ).on( 'click.wp-responsive', function( event ) {
event.preventDefault();
$wpwrap.toggleClass( 'wp-responsive-open' );
if ( $wpwrap.hasClass( 'wp-responsive-open' ) ) {
$(this).find('a').attr( 'aria-expanded', 'true' );
$( '#adminmenu a:first' ).focus();
} else {
$(this).find('a').attr( 'aria-expanded', 'false' );
}
} );
// Add menu events
$adminmenu.on( 'click.wp-responsive', 'li.wp-has-submenu > a', function( event ) {
if ( ! $adminmenu.data('wp-responsive') ) {
return;
}
$( this ).parent( 'li' ).toggleClass( 'selected' );
event.preventDefault();
});
self.trigger();
$document.on( 'wp-window-resized.wp-responsive', $.proxy( this.trigger, this ) );
// This needs to run later as UI Sortable may be initialized later on $(document).ready()
$window.on( 'load.wp-responsive', function() {
var width = navigator.userAgent.indexOf('AppleWebKit/') > -1 ? $window.width() : window.innerWidth;
if ( width <= 782 ) {
self.disableSortables();
}
});
},
activate: function() {
setPinMenu();
if ( ! $body.hasClass( 'auto-fold' ) ) {
$body.addClass( 'auto-fold' );
}
$adminmenu.data( 'wp-responsive', 1 );
this.disableSortables();
},
deactivate: function() {
setPinMenu();
$adminmenu.removeData('wp-responsive');
this.enableSortables();
},
trigger: function() {
var width;
if ( window.innerWidth ) {
// window.innerWidth is affected by zooming on phones
width = Math.max( window.innerWidth, document.documentElement.clientWidth );
} else {
// Exclude IE < 9, it doesn't support @media CSS rules
return;
}
if ( width <= 782 ) {
if ( ! wpResponsiveActive ) {
$document.trigger( 'wp-responsive-activate' );
wpResponsiveActive = true;
}
} else {
if ( wpResponsiveActive ) {
$document.trigger( 'wp-responsive-deactivate' );
wpResponsiveActive = false;
}
}
if ( width <= 480 ) {
this.enableOverlay();
} else {
this.disableOverlay();
}
},
enableOverlay: function() {
if ( $overlay.length === 0 ) {
$overlay = $( '<div id="wp-responsive-overlay"></div>' )
.insertAfter( '#wpcontent' )
.hide()
.on( 'click.wp-responsive', function() {
$toolbar.find( '.menupop.hover' ).removeClass( 'hover' );
$( this ).hide();
});
}
$toolbarPopups.on( 'click.wp-responsive', function() {
$overlay.show();
});
},
disableOverlay: function() {
$toolbarPopups.off( 'click.wp-responsive' );
$overlay.hide();
},
disableSortables: function() {
if ( $sortables.length ) {
try {
$sortables.sortable('disable');
} catch(e) {}
}
},
enableSortables: function() {
if ( $sortables.length ) {
try {
$sortables.sortable('enable');
} catch(e) {}
}
}
};
window.wpResponsive.init();
setPinMenu();
$document.on( 'wp-pin-menu wp-window-resized.pin-menu postboxes-columnchange.pin-menu postbox-toggled.pin-menu wp-collapse-menu.pin-menu wp-scroll-start.pin-menu', setPinMenu );
});
// Fire a custom jQuery event at the end of window resize
( function() {
var timeout;
function triggerEvent() {
$(document).trigger( 'wp-window-resized' );
}
function fireOnce() {
window.clearTimeout( timeout );
timeout = window.setTimeout( triggerEvent, 200 );
}
$(window).on( 'resize.wp-fire-once', fireOnce );
}());
// Make Windows 8 devices play along nicely.
(function(){
if ( '-ms-user-select' in document.documentElement.style && navigator.userAgent.match(/IEMobile\/10\.0/) ) {
var msViewportStyle = document.createElement( 'style' );
msViewportStyle.appendChild(
document.createTextNode( '@-ms-viewport{width:auto!important}' )
);
document.getElementsByTagName( 'head' )[0].appendChild( msViewportStyle );
}
})();
}( jQuery, window ));