Compiling dynamic HTML strings from database

javascript

dynamic-html

angularjs

directive

byNikita Barsukov·Nov 30, 2024

To safeguard and assemble dynamic HTML using database content, we leverage Handlebars which automatically escapes values and prevents XSS attacks.

const Handlebars = require('handlebars');

// That extraordinary content from your database 
const context = { title: 'Safe Title', body: 'Safe content in a world full of unsafe code' };

// A neat little Handlebars template
const source = `<h1>{{title}}</h1><p>{{body}}</p>`;

// Compile the template, throw in the data and hope for the best
const template = Handlebars.compile(source);
const result = template(context);

console.log(result);  // Outputs a sight for sore eyes: safe HTML

Working with AngularJS for Dynamic HTML

To tackle dynamic HTML compilation and binding, especially when working with frameworks like AngularJS, the following pointers will surely make you a hero with a cape (or at least, a programmer with a coffee).

Cook-up a Dynamic HTML Directive

You can construct a custom directive in AngularJS to manage your dynamic HTML, including rendering and binding it to the controller's scope. Think of the directive as your very own Iron Man suit, designed for the specific task at hand.

Bind Away with $compile

Imagine the $compile service in AngularJS as your friendly neighborhood Spider-Man, swinging between HTML strings and Angular scope, and neatly binding them together.

Dabble with $watch

The $watch service enables the magic of wizard-level real-time updates. Or as programmers call it, keeps your dynamic HTML fresh and snazzy.

Secure your Dynamic HTML with $sce

Who you gonna call for guarding your code against potential threats? Absolutely, it's the $sce (Strict Contextual Escaping) in AngularJS, aiding in the safe rendering of your dynamic HTML. Remember, with great power (of dynamic HTML), comes great responsibility (of security).

Advanced Techniques for AngularJS Dynamic Content

Dive deeper into the management and security of dynamic HTML content—paving the path to mastering AngularJS wizardry.

$compile in Non-Angular Contexts

To access $compile and $rootScope outside the Angular context, use an $injector instance—proof that boundless power can exist beyond boundaries.

Two-Way Binding with ng-model

Two-way data binding, anyone? Use ng-model in your dynamic HTML to keep your user-generated content and model in sync, "like two peas in a pod".

Interactive Elements with ng-click

Interactivity can be achieved by incorporating ng-click within your dynamic HTML, "because who likes to stare at a static page?"

Working within Angular's Rich Ecosystem

Angular provides a rich ecosystem of services, directives, and binding methods, sure to make Thanos envious. Leverage these elements for superior dynamic content handling.

explain-codes / Javascript / Compiling dynamic HTML strings from database

Linked

Insert HTML into view from AngularJS controller



How to render string with html tags in Angular 4+?



How to declare a variable in a template in Angular



Angularjs ngClass conditional



Can one AngularJS controller call another?

