Rendering A Dynamic Placeholder With Angular

Question

I've looked around, found several resources labeled 'ng-placeholder' or something incredibly similar. I cannot get this to work:

Solution 1:

Why not write your own directive for ng-placeholder? Something simple like this should work. You can call it in your html like this

<input ng-placeholder='test'>

Where test is a scope variable in the current controller.

.directive('ngPlaceholder', function($document) {
  return {
    restrict: 'A',
    scope: {
      placeholder: '=ngPlaceholder'
    },
    link: function(scope, elem, attr) {
      scope.$watch('placeholder',function() {
        elem[0].placeholder = scope.placeholder;
      });
    }
  }
});

Solution 2:

There exists a conditional attribute property in AngularJS ng-attr-{property_name}

For example, I'm using different placeholders for different search terms using

ng-attr-placeholder="{{isAdvanceSearch ? setPlaceholder(searchOption) : 'John Smith, 08/23/1970, 123'}}"

Here on the basis of isAdvanceSearch variable, I'm setting different placeholders in setPlaceholder method.

Baca Juga

setPlaceholder method returns the placeholder to set in the input field.

$scope.setPlaceholder = function(searchOption) {
     if (searchOption === "foo") {
          return"Search by foo… e.g. foo1";
     } elseif (searchOption === "bar") {
          return"Search by bar… e.g. bar123";
     } else {
          return"John Smith, 08/23/1970, 123";
     }
};

Note: John Smith, 08/23/1970, 123 is the default placeholder. Don't forget to wrap the expression in the {{}} brackets.

JavaScript Sample

Rendering A Dynamic Placeholder With Angular

Solution 1:

Solution 2:

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