How to make use of ng-if , ng-else in angularJS

Question

I want to compare id.here if id equals 5 do this, else do that. How can I achieve this?

<div class="case" data-ng-if="data.id === '5' ">
    <input type="checkbox" id="{{data.id}}" value="{{data.displayName}}"
            data-ng-model="customizationCntrl.check[data.id1]"
            data-ng-checked="{{data.status}}=='1'" onclick="return false;">{{data.displayName}}
        <br>
</div>
<div class="case" data-ng-else>
    <input type="checkbox" id="{{data.id}}" value="{{data.displayName}}"
            data-ng-model="customizationCntrl.check[data.id]"
            data-ng-checked="{{data.status}}=='1'">{{data.displayName}}<br>
</div>

what is `ng-else` directive is it a core directive in angularjs? — Kalhan.Toress, Sep 24 '15 at 08:14
Take a look at http://stackoverflow.com/questions/15810278/if-else-statement-in-angularjs-templates — Tobias Timm, Sep 24 '15 at 08:17
Angular 4 now has it : https://stackoverflow.com/questions/43006550/how-to-use-ngif-else-in-angular-4 — Simon_Weaver, Jun 20 '17 at 20:34

Vasyl · Accepted Answer · 2017-06-27T08:51:41.217

58

Use ng-switch with expression and ng-switch-when for matching expression value:

<div ng-switch="data.id">
  <div ng-switch-when="5">...</div>
  <div ng-switch-default>...</div>
</div>

Example is here

Angular2 example

edited Jun 27 '17 at 08:51

answered Sep 24 '15 at 08:17

Vasyl

1,393
15
26

for Angular2 same answer, different syntax - https://angular.io/docs/ts/latest/api/common/index/NgSwitch-directive.html – Simon_Weaver Dec 27 '16 at 03:51
3

you can also put `(data.id == 5)` for the switch statement expression and then `true` for the `when` expression if you find that clearer (and obviously only for an either/or value) – Simon_Weaver Dec 27 '16 at 03:57

Abhilash Augustine · Answer 2 · 2016-12-29T09:19:52.670

27

There is no directive for ng-else

You can use ng-if to achieve if(){..} else{..} in angularJs.

For your current situation,

<div ng-if="data.id == 5">
<!-- If block -->
</div>
<div ng-if="data.id != 5">
<!-- Your Else Block -->
</div>

edited Dec 29 '16 at 09:19

answered Sep 24 '15 at 08:31

Abhilash Augustine

4,128
1
24
24

1

This is what I use. You can negate your `if` statement to achieve an `else`. – Oniya Daniel Dec 24 '16 at 20:11

score 6 · Answer 3 · answered Oct 24 '17 at 13:14

6

You can also try ternary operator. Something like this

{{data.id === 5 ? "it's true" : "it's false"}}

Change your html code little bit and try this hope so it will be work for you.

answered Oct 24 '17 at 13:14

Ganesh Udmale

407
6
10

score 3 · Answer 4 · answered Sep 24 '15 at 12:41

I am adding some of the important concern about ng directives:-

Directives will respond the same place where it's execute.
ng-else concept is not there, you can with only if, or other flavor like switch statement.

Check out the below example:-

<div ng-if="data.type == 'FirstValue' ">
//different template with hoot data
</div>

<div ng-if="data.type == 'SecondValue' ">
  //different template with story data
</div>

<div ng-if="data.type == 'ThirdValue' ">
 //different template with article data
</div>

As per datatype it is going to render any one of the div.

score 2 · Answer 5 · answered Dec 12 '17 at 08:29

The syntax for ng if else in angular is :

<div class="case" *ngIf="data.id === '5'; else elsepart; ">
    <input type="checkbox" id="{{data.id}}" value="{{data.displayName}}" 
    data-ng-model="customizationCntrl.check[data.id1]" data-ng-checked="
    {{data.status}}=='1'" onclick="return false;">{{data.displayName}}<br>
</div>
<ng-template #elsepart>
    <div class="case">
        <input type="checkbox" id="{{data.id}}" value={{data.displayName}}"  
        data-ng-model="customizationCntrl.check[data.id]" data-ng-checked="
        {{data.status}}=='1'">{{data.displayName}}<br>
    </div> 
</ng-template>

ngif and else in used in higher version of angularjs like angular 2 and higher not in angularjs — Hrishikesh Kale, Jan 02 '18 at 05:57

score 0 · Answer 6 · answered Oct 05 '18 at 10:27

0

<span ng-if="verifyName.indicator == 1"><i class="fa fa-check"></i></span>
<span ng-if="verifyName.indicator == 0"><i class="fa fa-times"></i></span>

try this code. here verifyName.indicator value is coming from controller. this works for me.

answered Oct 05 '18 at 10:27

sayyed tabrez

116
1
1
11

Pawan Kr · Answer 7 · 2017-12-27T07:58:59.717

-1

You can write as:

<div class="case" ng-if="mydata.id === '5' ">
    <p> this will execute </p>
</div>
<div class="case" ng-if="mydata.id !== '5' ">
    <p> this will execute </p>
</div>

edited Dec 27 '17 at 07:58

answered Dec 11 '17 at 10:24

Pawan Kr

29
6

use this statement for if else condition in angularjs – Pawan Kr Dec 11 '17 at 10:37

How to make use of ng-if , ng-else in angularJS

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