Ensuring that you incorporate the appropriate code syntax and html structure is essential, particularly when enclosing the code within the ng-app and ng-controller tags.
Remember, it's possible to implement a feature where the background color changes dynamically as the user types. This change only occurs if the entered text corresponds to a recognized color value. For example, typing "red" will turn the background red, while inputting "blue" after deleting characters will revert the background to white since "blue" isn't a defined color - such as red... re ... r ...b ..bl... blu... blue.
It is recommended to utilize the .blur() method to adjust the background color after the user finishes typing instead of instantaneously on each keystroke. However, validity checks for colors aren't foolproof, so incorporating a select list with predefined color options can be more reliable. In this case, assigning classes with corresponding styling and toggling them (e.g., body.red { background-color: red}; body.blue { background-color: blue};) would be a good approach.
While there are more advanced techniques for manipulating background colors, this demonstration provides a foundational understanding of setting up an AngularJS application and accessing the $scope variable.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport"
content="width=device-width, initial-scale=1, user-scalable=yes">
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.5/angular.min.js"></script>
<script>
angular.module('DemoApp', [])
.controller('DemoController', ['$scope', function($scope) {
$scope.color = "red";
}]);
</script>
</head>
<body ng-app="DemoApp" ng-controller="DemoController" ng-style="{'background-color': color}">
Enter name <input type="text" ng-model="color" name=""><br/>Name : {{color}}
</body>
</html>