如何从angularjs中的js脚本制作单击按钮？

Question

I want to click checkbox from one of my function of script but i do not know how to do it in angularjs?

I have tried following way but it is not working :
JS

var a = document.getElementById("selectAllElem");
$scope.selectAll = a["onclick"];
if (typeof($scope.selectAll) == "function") {
    alert("call click");
    $scope.selectAll(a);
}

HTML

<input type="checkbox" ng-click="selectAll($event)" id="selectAllElem" />

Can anyone show me how to make checkbox click from js script in angularjs?

UPDATE
I can not use just single flag variable because above checkbox is placed at header of table and on click of it i need to make all selected check box as deselect and deselected check box as selected. I need to call button click to achieve target.

how to make checkbox click from js script in angularjs?

Answer 1

UPDATED

You can bind scope variables to all checkboxes and change them in the selectAll() method handling the click. Also, you could then bind a method to the selectAllElem checkbox, checking if all other checkboxes are selected. I renamed selectAll() to toggleAll() to show how to select/deselect in one method.

eg:

<input ... ng-click="toggleAll()" ng-model="allSelected()" />

and

$scope.allSelected = function(){
  return $scope.option1 && $scope.option2;
}
$scope.toggleAll = function(){
  var value = !$scope.allSelected();
  $scope.option1 = value;
  $scope.option2 = value;
}

In case of the checkboxes being generated from an array, you can have scope.options and iterate over it in both methods.

OLD

You could bind the input to a scope variable, eg:

<input type="checkbox" ng-click="selectAll($event)" id="selectAllElem" ng-model="allSelected" />

And then set that variable from within the function

$scope.allSelected = true;

Answer 2

you can use this instead of above code :

<input type="checkbox" ng-click="selectAll()" id="selectAllElem" ng-model="allSelected" />

in controller create function selectAll():

$scope.selectAll=function(){
   $scope.allSelected=true;
 }