Sharing an Angular scope variable with JavaScript

Question

Sharing an Angular scope variable with JavaScript

I have a streetName variable within an Angular scope.

<script type="text/javascript">
    angular.module('addApp').controller('add', ['$scope',function($scope) {
           $scope.streetName = "Bonita Ln";
    }]);
</script>

Could someone please advise me on how to access the streetName in a JavaScript function defined within this controller's scope (add)?

<div ng-app="addApp" ng-controller="add">
StreetName: {{streetName}}

<script type="text/javascript">
// I need to access the value of streetName here...
</script>

</div>

javascript angularjs

Answer 1

Answer №1

Here is a lengthy but effective method:

    angular.element(document.querySelector('[ng-controller="add"]')).scope().streetName

A more user-friendly approach:

    var dom_element = document.querySelector('[ng-controller="add"]');
    var angular_element = angular.element(dom_element);
    var scope_element = angular_element.scope();
    var street_name_variable = scope_element.streetName;

If you're using jQuery, it's much shorter:

    var street_name_variable = $('[ng-controller="add"]').scope().streetName;

Check out the jsfiddle demo

Answer 2

Here is a lengthy but effective method:

    angular.element(document.querySelector('[ng-controller="add"]')).scope().streetName

A more user-friendly approach:

    var dom_element = document.querySelector('[ng-controller="add"]');
    var angular_element = angular.element(dom_element);
    var scope_element = angular_element.scope();
    var street_name_variable = scope_element.streetName;

If you're using jQuery, it's much shorter:

    var street_name_variable = $('[ng-controller="add"]').scope().streetName;

Check out the jsfiddle demo

Answer 3

Answer №2

One way to transfer your scope vat to a common JavaScript variable is by using the $window service.

Here's an example:

angular.module('addApp', [])
.controller('add', ['$window', function ($window) {
    ...
    $window.streetName = $scope.streetName; 
    ...
}

You can then include your JavaScript code in common.js like this:

<script type="text/javascript">
    document.write("\<script src='...' type='text/javascript'>\<\/script>");
</script>

However, it's important to note that this is a workaround and not necessarily the best solution.

Answer 4

One way to transfer your scope vat to a common JavaScript variable is by using the $window service.

Here's an example:

angular.module('addApp', [])
.controller('add', ['$window', function ($window) {
    ...
    $window.streetName = $scope.streetName; 
    ...
}

You can then include your JavaScript code in common.js like this:

<script type="text/javascript">
    document.write("\<script src='...' type='text/javascript'>\<\/script>");
</script>

However, it's important to note that this is a workaround and not necessarily the best solution.

Answer 5

Answer №3

Dealing with a similar issue, I managed to find a workaround that served its purpose for me, although I can't guarantee it's the best solution.

To tackle this problem, consider creating a hidden input field in your HTML document and assigning it the value from Angular. This way, you can easily access this value in your JavaScript code. Remember to position this input field before your script tag so that it gets initialized before reaching the script section.

Here is an example implementation:

<div ng-app="addApp" ng-controller="add">
    StreetName: {{streetName}}
    <input type="hidden" id="dummyStreetName" value={{streetName}}>
    <script type="text/javascript">
        console.log("Retrieved street name: "+$("#dummyStreetName").val());
    </script>
</div>

Answer 6

Dealing with a similar issue, I managed to find a workaround that served its purpose for me, although I can't guarantee it's the best solution.

To tackle this problem, consider creating a hidden input field in your HTML document and assigning it the value from Angular. This way, you can easily access this value in your JavaScript code. Remember to position this input field before your script tag so that it gets initialized before reaching the script section.

Here is an example implementation:

<div ng-app="addApp" ng-controller="add">
    StreetName: {{streetName}}
    <input type="hidden" id="dummyStreetName" value={{streetName}}>
    <script type="text/javascript">
        console.log("Retrieved street name: "+$("#dummyStreetName").val());
    </script>
</div>

Answer 7

Answer №4

Here is a straightforward jQuery solution:

HTML

<div id="information" data-place="{{placeName}}"></div>

JavaScript

$(document).ready(function() {
    var placeName = $('#information').data('place');
});

The $(document.ready... function is crucial to allow time for AngularJS to establish the variables.

Answer 8

Here is a straightforward jQuery solution:

HTML

<div id="information" data-place="{{placeName}}"></div>

JavaScript

$(document).ready(function() {
    var placeName = $('#information').data('place');
});

The $(document.ready... function is crucial to allow time for AngularJS to establish the variables.

Answer 9

Answer №5

When working with Angular 11 and typescript 4.3.2, I found a solution that allowed me to set a localStorage item in my ngOnInit function:

window.localStorage.setItem("roundChartEdges","false")

This enabled me to access the stored variable within a customized draw function for chartsjs:

Chart['elements'].Rectangle.prototype.draw = function () {
  console.log(window.localStorage.getItem("roundChartEdges"))
  ...
}

This approach can work well as long as sensitive data is not being stored.

I utilized this method to dynamically control the rounding of bar chart edges in chartsjs based on certain conditions defined in my ngOnInit.

Answer 10

When working with Angular 11 and typescript 4.3.2, I found a solution that allowed me to set a localStorage item in my ngOnInit function:

window.localStorage.setItem("roundChartEdges","false")

This enabled me to access the stored variable within a customized draw function for chartsjs:

Chart['elements'].Rectangle.prototype.draw = function () {
  console.log(window.localStorage.getItem("roundChartEdges"))
  ...
}

This approach can work well as long as sensitive data is not being stored.

I utilized this method to dynamically control the rounding of bar chart edges in chartsjs based on certain conditions defined in my ngOnInit.

Sharing an Angular scope variable with JavaScript

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

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