How To Blur Popup Background in Ionic/Angular using manual method:

To achieve this in Ionic 1, you need to set the main div’s class (that is displayed in the background of your popup) to use the blur css class .

CSS:

// css file 

.blur{
  -webkit-filter: blur(2px);
  -moz-filter: blur(2px);
  -o-filter: blur(2px);
  -ms-filter: blur(2px);
  filter: blur(2px);
}

HTML:

//In your html set the main div of your app to use a dynamic class
 
<div ng-class="blurClass"></div>

JS Controller:

//In JS file set the blur variable to the blur class
 
$scope.blurClass = "blur";

// when done just set the blur to false

$scope.blurClass = false;