When it comes to combining Angular and Bootstrap, the task can be daunting. Especially if you're delving into the realm of the bootstrap grid system, there are certain key points to consider.
Bootstrap Grid System
Official Documentation
The basic structure of a grid setup is showcased in the following example:
<div class="container">
<div class="row">
<div class="col-md-6">
<button class="btn btn-primary">Primary button</button>
</div>
<div class="col-md-6">
<button class="btn btn-secondary">Secondary button</button>
</div>
</div>
</div>
Using the .container class ensures a fixed size for the grid based on window width:
https://i.sstatic.net/lPBxT.png
Additionally, understanding the different breakpoints provided by Bootstrap helps tailor the layout accordingly:Breakpoints Reference
https://i.sstatic.net/sQT8r.png
For scenarios where full-width display is required without gutters, utilizing .container-fluid achieves this effect:
https://i.sstatic.net/G0hrh.png
Column Structure
Bootstrap's grid system operates on a 12-column ideology where column widths sum up to 12 or fewer.
Responsive Design
Specifying classes like col-xs-6 or col-lg-6 dictates when cells wrap based on window dimensions (<768px).
Nested Grid Setup
To create subgrids within grids, nesting columns can be achieved as demonstrated below:
<div class="container">
<div class="row">
<div class="col-md-6">
<div class="row">
<div class="col-xs-4">Cell 1</div>
<div class="col-xs-4">Cell 2</div>
<div class="col-xs-4">Cell 3</div>
</div>
<div class="row">
<div class="col-xs-4">Cell 1</div>
<div class="col-xs-4">Cell 2</div>
<div class="col-xs-4">Cell 3</div>
</div>
</div>
</div>
</div>
Diving Into Bootstrap with Angular
Incorporating Bootstrap styles along with Angular components involves tweaking configurations via the angular.json file to optimize performance.
{
"projects": {
"example": {
...,
"architect": {
"build": {
"options": {
...,
"styles": [
{ "input": "node_modules/bootstrap/scss/bootstrap.scss", "bundleName": "style.css" },
{ "input": "src/styles.scss", "bundleName": "style.css" }
],
"scripts": [
...
]
}
}
}
}
}
}
While integrating scripts directly may impact bundle size negatively, leveraging Angular components for advanced Bootstrap functionalities could offer a more optimal solution.
Choosing the Right Angular-Bootstrap Approach
A multitude of libraries like ng-bootstrap and ngx-bootstrap exist to simplify integration but might have trade-offs in terms of global CSS references affecting bundlesize.
Creating Custom ng-bootstrap Components
Developing tailored Angular components offers a way to manage styles efficiently, minimizing unnecessary bundling of styles not utilized within the project:
:host ::ng-deep {
// Configuration
@import "~bootstrap/scss/functions";
@import "~bootstrap/scss/variables";
@import "~bootstrap/scss/mixins";
// Layout & components
@import "~bootstrap/scss/alert";
// Custom SCSS
.alert .btn {
bottom: 0;
display: inline-flex;
align-items: center;
}
}
However, issues related to Angular's treatment of ::ng-deep selectors warrant attention, as they might lead to unintended style bundling behavior.
Wrap-Up
Ultimately, balancing between functionality requirements and efficient resource management will dictate the approach to incorporating Bootstrap features within an Angular environment. Considerations around bundle size optimization should guide the choice of library or custom implementation strategies.