Create Calculator application use Angularjs.

Create calculator application use Angularjs

Part 4:

ng-option is one of the angularjs module. ng-option is using to create calculator application. This module is embedded in <select> html tag.

Syntax:

<select                                                                          
             ngModel = "{select ng-model name - string}"    
             [name ="{select name - string}"]                       
             [required]                                                         
             [ngRequired="{string format}"]                         
             [ngOptions = "{comprehension_expression}"]> 
</select>                                                                       


 The angularjs module, ngOptions can be used dynamically create option list in <select> tag. The ngOptions
is consist of array values.

example:

<select                                                                              
           ng-model = "selectedOperator"                                  
           ng-options = "operator for operator in operators" >
</select>                                                                           


 operators is an array, create in controller site,

example:

$scope.operators = [ '+' , '-', '*', '/' ];                                 


sample code:

Demo :

Calculator - jsfiddle

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