Fix #168

add a try/catch around the new event constructor for browsers that don't
support it

fix some indentation issues

Author: lukepfeiffer10

src/mask.js

@@ -460,7 +460,7 @@ angular.module('ui.mask', [])
                                     // Angular uses html element and calls setViewValue(element.value.trim()), setting it to the trimmed mask
                                     // when it should be empty
                                     var currentVal = iElement.val();
-                                    var isTemporarilyEmpty = value === '' && currentVal && angular.isDefined(iAttrs.uiMaskPlaceholderChar) && iAttrs.uiMaskPlaceholderChar === 'space'; 
+                                    var isTemporarilyEmpty = value === '' && currentVal && angular.isDefined(iAttrs.uiMaskPlaceholderChar) && iAttrs.uiMaskPlaceholderChar === 'space';
                                     if(isTemporarilyEmpty) {
                                         iElement.val('');
                                     }
@@ -476,12 +476,20 @@ angular.module('ui.mask', [])
                                 var change;
                                 if (angular.isFunction(window.Event) && !element.fireEvent) {
                                     // modern browsers and Edge
-                                    change = new Event('change', {
-                                        view: window,
-                                        bubbles: true,
-                                        cancelable: false
-                                    });
-                                    element.dispatchEvent(change);
+                                    try {
+                                        change = new Event('change', {
+                                            view: window,
+                                            bubbles: true,
+                                            cancelable: false
+                                        });
+                                    } catch (ex) {
+                                        //this is for certain mobile browsers that have the Event object
+                                        //but don't support the Event constructor #168
+                                        change = document.createEvent('HTMLEvents');
+                                        change.initEvent('change', false, true);
+                                    } finally {
+                                        element.dispatchEvent(change);
+                                    }
                                 } else if ('createEvent' in document) {
                                     // older browsers
                                     change = document.createEvent('HTMLEvents');
@@ -511,30 +519,30 @@ angular.module('ui.mask', [])
                             }
 
                             function keydownHandler(e) {
-		              	/*jshint validthis: true */
-				var isKeyBackspace = e.which === 8,
-				caretPos = getCaretPosition(this) - 1 || 0, //value in keydown is pre change so bump caret position back to simulate post change
-				isCtrlZ = e.which === 90 && e.ctrlKey; //ctrl+z pressed
-		
-				if (isKeyBackspace) {
-					while(caretPos >= 0) {
-						if (isValidCaretPosition(caretPos)) {
-						//re-adjust the caret position.
-						//Increment to account for the initial decrement to simulate post change caret position
-						setCaretPosition(this, caretPos + 1);
-						break;
-						}
-					caretPos--;
-					}
-				preventBackspace = caretPos === -1;
-				}
-				
-				if (isCtrlZ) {
-					// prevent IE bug - value should be returned to initial state
-					iElement.val('');
-					e.preventDefault();
-				}
-			}
+                                /*jshint validthis: true */
+                                var isKeyBackspace = e.which === 8,
+                                caretPos = getCaretPosition(this) - 1 || 0, //value in keydown is pre change so bump caret position back to simulate post change
+                                isCtrlZ = e.which === 90 && e.ctrlKey; //ctrl+z pressed
+
+                                if (isKeyBackspace) {
+                                    while(caretPos >= 0) {
+                                        if (isValidCaretPosition(caretPos)) {
+                                            //re-adjust the caret position.
+                                            //Increment to account for the initial decrement to simulate post change caret position
+                                            setCaretPosition(this, caretPos + 1);
+                                            break;
+                                        }
+                                        caretPos--;
+                                    }
+                                    preventBackspace = caretPos === -1;
+                                }
+
+                                if (isCtrlZ) {
+                                    // prevent IE bug - value should be returned to initial state
+                                    iElement.val('');
+                                    e.preventDefault();
+                                }
+                            }
 
                             function eventHandler(e) {
                                 /*jshint validthis: true */