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CSS
CSS Introduction CSS Syntax CSS Selector How To Add CSS CSS Comments CSS Colors CSS Background color CSS background-image CSS Borders CSS Margins CSS Height, Width and Max-width CSS Box Model CSS Outline CSS Text CSS Fonts CSS Icon CSS Links CSS Tables CSS Display CSS Maximum Width CSS Position z-index Property
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JQuery
What is jQuery? Benefits of using jQuery Include jQuery Selectors. Methods. The $ symbol and shorthand. Selecting elements Getting and setting content Adding and removing elements Modifying CSS and classes Binding and Unbinding events Common events: click, hover, focus, blur, etc Event delegation Using .on() for dynamic content Showing and hiding elements Fading elements in and out Sliding elements up and down .animate() Understanding AJAX .ajax() .load(), .get(), .post() Handling responses and errors. Parent Chlid Siblings Filtering Elements Using find Selecting form elements Getting form values Setting form values Form validation Handling form submissions jQuery plugins Sliders plugins $.each() $.trim() $.extend() Data attributes Debugging jQuery code
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Bootstrap 4
What is Bootstrap Benefits of using Setting up Container Row and Column Grid Classes Breakpoints Offsetting Columns Column Ordering Basic Typography Text Alignment Text colors Backgrounds Display Font Size Utilities Buttons Navs and Navbar Forms Cards Alerts Badges Progress Bars Margin Padding Sizing Flexbox Dropdowns Modals Tooltips Popovers Collapse Carousel Images Tables Jumbotron Media Object
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PHP
PHP Introduction PHP Installation PHP Syntax PHP Comments PHP Variable PHP Echo PHP Data Types PHP Strings PHP Constant PHP Maths PHP Number PHP Operators PHP if else & if else if PHP Switch PHP Loops PHP Functions PHP Array PHP OOps PHP Class & Object PHP Constructor PHP Destructor PHP Access Modfiers PHP Inheritance PHP Final Keyword PHP Class Constant PHP Abstract Class PHP Superglobals PHP Regular Expression PHP Interfaces PHP Static Method PHP Static Properties PHP Namespace PHP Iterable PHP Form Introduction PHP Form Validation PHP Complete Form PHP Date and Time PHP Include Files PHP - Files & I/O File Upload PHP Cookies PHP SESSION PHP Filters PHP Callback Functions PHP JSON PHP AND Exceptions PHP Connect database
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MY SQL
SQL Introduction Syntax Select statement Select Distinct WHERE Clause Order By SQL AND Operator SQL OR Operator SQL NOT Operator SQL LIKE SQL IN SQL BETWEEN SQL INSERT INTO SQL NULL Values SQL UPDATE SQL DELETE SQL TOP, LIMIT, FETCH FIRST or ROWNUM Clause SQL MIN() and MAX() Functions SQL COUNT() Function SQL SUM() SQL AVG() SQL Aliases SQL JOIN SQL INNER JOIN SQL LEFT JOIN SQL RIGHT JOIN SQL FULL OUTER JOIN SQL Self Join SQL UNION SQL GROUP BY SQL HAVING SQL EXISTS SQL ANY and ALL SQL SELECT INTO SQL INSERT INTO SELECT SQL CASE SQL NULL Functions SQL Stored Procedures SQL Comments SQL Operators SQL CREATE DATABASE SQL DROP DATABASE SQL BACKUP DATABASE SQL CREATE TABLE SQL DROP TABLE SQL ALTER TABLE SQL Constraints SQL NOT NULL SQL UNIQUE Constraint SQL PRIMARY KEY SQL FOREIGN KEY SQL CHECK Constraint SQL CREATE INDEX SQL AUTO INCREMENT SQL Dates SQL Views SQL Injection SQL Hosting SQL Data Types
Sizing Bootstrap
In Bootstrap 4, sizing refers to the ability to control the size of various elements, such as images, containers, and columns. Here are some key concepts and examples to help you understand how sizing works:
1. Sizing Images
Bootstrap 4 provides several utility classes to help you control the size of images. Here are some examples:
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Responsive Images: Use the
.img-fluid
class to make images scale with the parent element.<img src="image.jpg" class="img-fluid" alt="Responsive image">
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Fixed Size Images: Use custom CSS classes to set fixed sizes.
<style> .custom-size { width: 150px; height: auto; /* Maintains aspect ratio */ } </style> <img src="image.jpg" class="custom-size" alt="Fixed size image">
2. Sizing Containers
Containers in Bootstrap 4 are used to center and pad your content. There are two types of containers:
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Fixed-width Containers: Use
.container
to create a fixed-width container with responsive behavior.<div class="container"> <p>This is a fixed-width container.</p> </div>
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Fluid Containers: Use
.container-fluid
to create a full-width container that spans the entire width of the viewport.<div class="container-fluid"> <p>This is a fluid container.</p> </div>
3. Sizing Columns
Bootstrap 4 uses a grid system to control column sizing. You can specify column sizes for different screen sizes using the grid classes:
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Basic Grid System: Specify column sizes with
.col-*
classes. For example,.col-6
makes a column take up half the width of the container.<div class="row"> <div class="col-6"> <p>This column takes up half the width of the container.</p> </div> <div class="col-6"> <p>This column also takes up half the width of the container.</p> </div> </div>
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Responsive Columns: Adjust column sizes for different screen sizes using responsive classes like
.col-sm-4
,.col-md-3
, etc.<div class="row"> <div class="col-sm-4 col-md-3"> <p>This column is 4 columns wide on small screens and 3 columns wide on medium screens.</p> </div> <div class="col-sm-8 col-md-9"> <p>This column is 8 columns wide on small screens and 9 columns wide on medium screens.</p> </div> </div>
4. Sizing Buttons
You can use Bootstrap's sizing classes to control button sizes:
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Button Sizes: Use
.btn-lg
for large buttons and.btn-sm
for small buttons.<button class="btn btn-primary btn-lg">Large Button</button> <button class="btn btn-primary btn-sm">Small Button</button>
5. Custom Sizing with CSS
For more control, you can use custom CSS to adjust sizes:
<style>
.custom-size {
width: 100px;
height: 50px;
}
</style>
<div class="custom-size">
<p>Custom sized element.</p>
</div>
These examples cover the basic ways to handle sizing in Bootstrap 4. You can combine these techniques to achieve the desired layout and responsiveness for your project.
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