Javascript – change focus to the next input text with angularjs

angularjshtmljavascript

I have an object variable in my controller (var myObject), divided into 3 input text in the IHM.

I want to change automatically the focus to the next input when the focused one reached the maxLength.

var myObject = {
   part1:"",
   part2:"",
   part3:""
}



<form>
    <input type="text" id="part1" ng-model="myObject.part1" maxlength="7"/>
    <input type="text" id="part2" ng-model="myObject.part2" maxlength="12"/>
    <input type="text" id="part2" ng-model="myObject.part2" maxlength="12"/>
</form>

Best Solution

You'd need to use a directive for this:

app.directive("moveNextOnMaxlength", function() {
    return {
        restrict: "A",
        link: function($scope, element) {
            element.on("input", function(e) {
                if(element.val().length == element.attr("maxlength")) {
                    var $nextElement = element.next();
                    if($nextElement.length) {
                        $nextElement[0].focus();
                    }
                }
            });
        }
    }
});

And update your form as follows:

<form>
    <input type="text" id="part1" ng-model="myObject.part1" maxlength="7" move-next-on-maxlength />
    <input type="text" id="part2" ng-model="myObject.part2" maxlength="12" move-next-on-maxlength />
    <input type="text" id="part2" ng-model="myObject.part2" maxlength="12"/>
</form>

Demo

You could move the directive onto the <form> element instead, but the build-int jqLite's find() method will restrict you to only finding elements by tag name. If you're using full jQuery, or can use vanillaJS instead, I would suggest this method.