Introduction to Responsify

Responsify is a powerful and versatile library designed to help developers create responsive web applications effortlessly. It offers a wide range of APIs to manage layout and responsiveness of web pages. This guide will introduce you to dozens of useful Responsify APIs with code snippets, along with a complete app example.

API Reference

1. initialize(container)

Initializes the Responsify instance within a specified container.

  const container = document.getElementById('app');
  Responsify.initialize(container);

2. addBreakpoint(name, size)

Adds a new breakpoint to the Responsify configuration.

  Responsify.addBreakpoint('tablet', 768);

3. removeBreakpoint(name)

Removes an existing breakpoint from the configuration.

  Responsify.removeBreakpoint('mobile');

4. onBreakpointChange(callback)

Sets a callback function that triggers when the breakpoint changes.

  Responsify.onBreakpointChange(breakpoint => {
    console.log('Current breakpoint:', breakpoint);
  });

5. setContainerQuery(container, queries)

Applies responsive queries to a specific container.

  const queries = {
    mobile: { maxWidth: '480px' },
    tablet: { maxWidth: '768px' }
  };
  Responsify.setContainerQuery(container, queries);

6. enableResponsiveImages(enable)

Enables or disables responsive image handling.

  Responsify.enableResponsiveImages(true);

7. registerComponent(name, options)

Registers a custom responsive component.

  const options = {
    breakpoints: ['mobile', 'tablet'],
    render: (breakpoint) => {
      if (breakpoint === 'mobile') {
        return '
Mobile Component
';
      } else {
        return '
Tablet Component
';
      }
    }
  };
  Responsify.registerComponent('customComponent', options);

8. getActiveBreakpoint()

Returns the current active breakpoint.

  const activeBreakpoint = Responsify.getActiveBreakpoint();
  console.log('Active Breakpoint:', activeBreakpoint);

9. watchElement(element, breakpoints)

Watches an element for breakpoint changes.

  const element = document.getElementById('content');
  Responsify.watchElement(element, ['mobile', 'tablet']);

10. toggleVisibility(element, visible)

Toggles the visibility of an element based on breakpoints.

  const element = document.getElementById('message');
  Responsify.toggleVisibility(element, true);

Application Example

Let’s implement a simple responsive web application using Responsify APIs.

HTML

  

    
Header
    
Content
    
Footer
  

JavaScript

  const container = document.getElementById('app');
  Responsify.initialize(container);

  Responsify.addBreakpoint('mobile', 480);
  Responsify.addBreakpoint('tablet', 768);

  Responsify.onBreakpointChange(breakpoint => {
    console.log('Current breakpoint:', breakpoint);
  });

  const queries = {
    mobile: { maxWidth: '480px' },
    tablet: { maxWidth: '768px' },
  };
  Responsify.setContainerQuery(container, queries);

  Responsify.enableResponsiveImages(true);

  const options = {
    breakpoints: ['mobile', 'tablet'],
    render: (breakpoint) => {
      if (breakpoint === 'mobile') {
        return '
Mobile Component
';
      } else {
        return '
Tablet Component
';
      }
    }
  };
  Responsify.registerComponent('customComponent', options);

  const activeBreakpoint = Responsify.getActiveBreakpoint();
  console.log('Active Breakpoint:', activeBreakpoint);

  const element = document.getElementById('content');
  Responsify.watchElement(element, ['mobile', 'tablet']);

  Responsify.toggleVisibility(element, true);

By following the above example, you can create a responsive web application that adapts seamlessly to different screen sizes and devices.

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