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How to Inject 3Rd Party Javascript In Ember.js Template?

4 minutes read

To inject third-party JavaScript in an Ember.js template, you can use the Ember.run.scheduleOnce method to ensure that the JavaScript code is executed after the template has been rendered. This method allows you to run a function after the next rendering of the Ember.js run loop.


First, you should create a component in your Ember.js application where you want to inject the third-party JavaScript code. Then, in the didInsertElement hook of the component, you can use the Ember.run.scheduleOnce method to execute the third-party JavaScript code.


For example, if you have a component named third-party-script, you can add the following code to inject the third-party JavaScript code:

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import Ember from 'ember';

export default Ember.Component.extend({
  didInsertElement() {
    Ember.run.scheduleOnce('afterRender', this, function() {
      // Third-party JavaScript code to inject
      // For example, if you want to load a script from a URL:
      let script = document.createElement('script');
      script.src = 'https://example.com/third-party-script.js';
      document.head.appendChild(script);
    });
  }
});


This code will ensure that the third-party JavaScript code is injected into the Ember.js template after it has been rendered. Adjust the script source URL and code as needed for the specific third-party JavaScript you want to inject.


How to include external scripts in ember.js template?

To include external scripts in an Ember.js template, you can use the link-to helper or the script tag.


Here's an example of how to include an external script using the link-to helper:

  1. Create a new Ember.js component or template file where you want to include the external script.
  2. Use the link-to helper to include the script in the template. For example: 
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{{link-to 'script' 'https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js'}}


  1. Save the file and run your Ember.js application. The external script should now be included in the template.


Alternatively, you can also use the script tag to include external scripts in an Ember.js template. Here's an example:

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<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>


Simply add the script tag with the src attribute pointing to the URL of the external script you want to include in the template. Save the file and run your Ember.js application to see the external script in action.


How do I manually inject third-party JavaScript in ember.js template?

To manually inject third-party JavaScript in an Ember.js template, you can use the {{content-for}} helper that Ember provides.


Here's an example of how you can do this:

  1. In your app folder, open the ember-cli-build.js file.
  2. Add the following code inside the module.exports = function(defaults) function: 
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const EmberApp = require('ember-cli/lib/broccoli/ember-app');

module.exports = function(defaults) {
  let app = new EmberApp(defaults, {
    'ember-cli-terser': {
      disable: true
    }
  });

  app.options.inlineContent = {
    'custom-script': {
      content: '<script src="https://example.com/third-party-script.js"></script>'
    }
  };
  
  return app.toTree();
};


  1. In your Ember template, use the {{content-for}} helper to inject the script where you want it to appear. For example:
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{{content-for "head"}}
{{content-for "custom-script"}}


This will inject the third-party JavaScript script in the <head> section of your HTML file.

  1. Run the Ember server to see the changes:
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ember serve


The third-party JavaScript should now be injected into your Ember.js template.


What are the benefits of including external scripts in ember.js template?

There are several benefits of including external scripts in an Ember.js template:

  1. Improved code organization: By separating external scripts from the main template file, you can keep your code more organized and maintainable. This makes it easier to manage and update your code in the future.
  2. Reusability: External scripts can be reused across multiple templates and components in your application. This can help reduce duplication of code and make your application more efficient.
  3. Better performance: By loading external scripts separately, you can improve the performance of your application by ensuring that only the necessary scripts are loaded when required.
  4. Enhanced functionality: Including external scripts allows you to add extra functionality, such as third-party libraries or plugins, to your Ember.js application. This can help you enhance the user experience and add new features to your application.
  5. Easier testing: Separating external scripts from the main template file can make it easier to test and debug your code. You can easily isolate and test individual scripts without affecting other parts of your application.


How do I restrict access to sensitive data when integrating external libraries in ember.js template?

There are several steps you can take to restrict access to sensitive data when integrating external libraries in an Ember.js template:

  1. Use secure data storage: Store sensitive data in a secure location, such as a backend server, and only retrieve and display the necessary data in the Ember.js template. Avoid storing sensitive data directly in the frontend code or template.
  2. Use authentication and authorization: Implement authentication and authorization mechanisms to control access to sensitive data. Only authenticated users with the appropriate permissions should be able to access and view sensitive information.
  3. Use encrypted communication: Make sure that all communication between the frontend and backend is encrypted using HTTPS to protect sensitive data from eavesdropping or interception.
  4. Sanitize input and output: Validate and sanitize input data to prevent injection attacks, such as XSS (cross-site scripting). Also, be cautious about the data displayed in the template and ensure that sensitive data is not exposed unintentionally.
  5. Limit access to external libraries: Only include external libraries that are trusted and have a good reputation for security. Be cautious about including third-party libraries that may have potential security vulnerabilities or backdoors.


By following these best practices, you can help restrict access to sensitive data when integrating external libraries in an Ember.js template and enhance the security of your application.

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