As a beginner with Angular, I am attempting to link a string to a model as long as the value is not empty. This is successful for a single input, but I now want to merge multiple text inputs into a single string.
<input type="text" ng-model="data.source">
<input type="text" ng-model="data.medium">
<span ng-show="data.source"><h3>{{'additionToSource' + data.source}}</h3></span>
<span ng-show="data.medium"><h3>{{'additionToMedium' + data.medium}}</h3></span>
Check out the live demo here (click).
If you want to hide the entire element, you can simply include the ng-show or ng-hide directive within the h3 tag.
Another option is to use ternary in the binding to decide what should be bound:
{{foo ? 'some string '+foo : ''}}
Here's an explanation:
foo //if $scope.foo is truthy (not empty)
? 'some string '+foo //bind a string with $scope.foo added at the end
: '' //otherwise, bind an empty string
In your code, it would look like this:
<h3>{{data.source ? 'additionToString' + data.source : ''}}</h3>
Based on your feedback, you might also want to return a binding with a function: View the live demo with function (click).
<input ng-model="foo">
<h3 ng-show="foo">{{bar()}}</h3>
<h3>{{foo ? bar() : ''}}</h3>
JavaScript:
$scope.foo = '';
$scope.bar = function() {
return 'added value '+$scope.foo;
};
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