How come my Angular JS isn't functioning properly?

I am trying to use AngularJS to replace specific text with defined text. Here is my HTML:

<!DOCTYPE html>
<html>
<head>
    <title>Directive</title>

    <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.16/angular.js"></script>
    <script type="text/javascript" src="script.js"></script>
</head>
<body ng-app="myApp">
    <div hello-world>sometext</div>
</body>
</html>

And here is the corresponding JavaScript code:

var app = angular.module('myApp', []);

app.directive('helloWorld', function() {
  return {
      restrict: 'AE',
      replace: 'true',
      template: '<input type="text" ng-model="headline"/><br/>{{headline}}'
  };
});

However, when I test this in my browser, I receive the following error message:

Error: [$compile:tplrt] Template for directive 'helloWorld' must have exactly one root element....

Can anyone advise on how to resolve this issue? Thank you.

Answer №1

return {
      directiveType: 'AE',
      shouldReplace: 'true',
      templateCode: '<div><input type="text" ng-model="headline"/><br/>{{headline}}</div>'
  };

This code snippet should work effectively. It is essential to have the div tag enclosing the template string.

As mentioned by Sajeetharan, there should only be one wrapper for the template that replaces your directive.

Having multiple elements or nodes replacing a single element (the directive) is not supported and rarely required in practice.

While it doesn't have to specifically be a div, when using 'replace':true, your template structure must adhere to:

<any-tag-of-your-choice>template content</any-tag-of-your-choice>

For more information, refer to the directive template documentation with replace mode enabled.

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