What is the difference between ng-show ng-hide and Ng-if?
The Differences ng-show (and its sibling ng-hide ) toggle the appearance of the element by adding the CSS display: none style. ng-if , on the other hand, actually removes the element from the DOM when the condition is false and only adds the element back once the condition turns true .
Should I use ngIf or hidden?
The main difference is that *ngIf will remove the element from the DOM, while [hidden] actually plays with the CSS style by setting display:none. Generally it is expensive to add and remove stuff from the DOM for frequent actions.
What is the use of NG-hide?
Definition and Usage The ng-hide directive hides the HTML element if the expression evaluates to true. ng-hide is also a predefined CSS class in AngularJS, and sets the element’s display to none .
What is difference between ngIf and ngShow?
ngIf makes a manipulation on the DOM by removing or recreating the element. Whereas ngShow applies a css rules to hide/show things.
What are AngularJS expressions?
Expressions in AngularJS are used to bind application data to HTML. The expressions are resolved by Angular and the result is returned back to where the expression is written. The expressions in AngularJS are written in double braces: {{ expression }}. They behave similar to ng-bind directives: ng-bind=”expression”.
What is * ngIf and how does it work?
NgIflink. A structural directive that conditionally includes a template based on the value of an expression coerced to Boolean. When the expression evaluates to true, Angular renders the template provided in a then clause, and when false or null, Angular renders the template provided in an optional else clause.
Which directive is used to hide a given control?
ng-hide directive
B – ng-hide directive can hide a given control.
What is hidden in Angular?
The DOM representation of the hidden attribute is a property also called hidden , which if set to true hides the element and false shows the element. Angular doesn’t manipulate HTML attributes, it manipulates DOM properties because the DOM is what actually gets displayed.
What is the difference between [hidden] and [ngif] in angular2?
*ngIf will include and remove the element from the DOM if set to true and false respectively. [hidden] in angular2 is the equivalent of ngshow and nghide that we had in AngularJS.It just shows and hides the element by add display:none and display:block. Show activity on this post.
What is the difference between ng-if and Ng-hide?
The ng-if directive removes or recreates a portion of the DOM tree based on an expression, Instead of hiding it. The ng-hide directive shows or hides the given HTML element based on the expression provided to the ng-hide attribute . ng-if can only render data whenever the condition is true.
How to show or hide the given HTML element using ngshow?
The ngShow directive shows or hides the given HTML element based on the expression provided to the ngShow attribute. The element is shown or hidden by removing or adding the ng-hide CSS class onto the element.
What happens when ngif is false in HTML?
If the expression assigned to ngIf evaluates to a false value then the element is removed from the DOM, otherwise a clone of the element is reinserted into the DOM. When an element is removed using ngIf its scope is destroyed and a new scope is created when the element is restored.