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When I use checked="checked" ng-model prevents the radio button from being selected by default. Does anyone know what could be causing this?
<input type="radio" name="unitMiles" checked="checked" id="unitMiles" value="Miles" ng-model="unit" ng-change='nextActivityStep(3)'>
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You can check a radio button by default by adding the checked HTML attribute to the <input> element. You can disable a radio button by adding the disabled HTML attribute to both the <label> and the <input> .
AngularJS ng-checked Directive The ng-checked directive sets the checked attribute of a checkbox or a radiobutton. The checkbox, or radiobutton, will be checked if the expression inside the ng-checked attribute returns true. The ng-checked directive is necessary to be able to shift the value between true and false .
The ngModel directive is a directive that is used to bind the values of the HTML controls (input, select, and textarea) or any custom form controls, and stores the required user value in a variable and we can use that variable whenever we require that value. It also is used during form validations.
You should be using the ngChecked directive that comes with Angular.
Doc: http://docs.angularjs.org/api/ng.directive:ngChecked
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