 | AngularJS-QA-3 | AngularJS-QA-5 |  |
AngularJS Question Answers - 4 |
| Question: | What is the purpose of the directive 'ng-class'? |
| Answer: | ng-class: Specifies CSS classes on HTML elements. |
| Question: | What is the purpose of the directive 'ng-class-even'? |
| Answer: | ng-class-even: Same as ng-class, but will only take effect on even rows. |
| Question: | How does interpolation, e.g. “{{ someModel }}”, actually work? |
| Answer: | It relies on $interpolation, a service which is called by the compiler. It evaluates text and markup which may contain AngularJS expressions. For every interpolated expression, a “watch()” is set. $interpolation returns a function, which has a single argument, “context”. By calling that function and providing a scope as context, the expressions are “$parse()”d against that scope. |
| Question: | What is the purpose of the directive 'ng-readonly'? |
| Answer: | ng-readonly: Specifies the readonly attribute of an element. |
| Question: | How to implement routing in AngularJS? |
| Answer: | It is a five-step process:
Step 1: – Add the “Angular-route.js” file to your view. Step 2: – Inject “ngroute” functionality while creating Angular app object. Step 3: – Configure the route provider. Step 4: – Define hyperlinks. Step 5: – Define sections where to load the view. |
| Question: | Is it a good or bad practice to use AngularJS together with jQuery? |
| Answer: | It is definitely a bad practice. We need to stay away from jQuery and try to realize the solution with an AngularJS approach. jQuery takes a traditional imperative approach to manipulating the DOM, and in an imperative approach, it is up to the programmer to express the individual steps leading up to the desired outcome. |
| Question: | What is the purpose of the directive 'ng-non-blindable'? |
| Answer: | ng-non-blindable: Specifies that no data binding can happen in this element, or it's children. |
| Question: | What is the purpose of angular.element() |
| Answer: | It wraps an HTML element as an jQuery element. |
| Question: | Explain what is link in Angular.js? |
| Answer: | Link: It is used for registering DOM listeners as well as instance DOM manipulation. It is executed once the template has been cloned. |
| Question: | Which directive defines the root element of an application? |
| Answer: | 'ng-app' directive defines the root element of an application. |
| | AngularJS-QA-3 | AngularJS-QA-5 | |