Cross-Browser CSS Rotation with jQuery Animate()
Introduction
CSS rotation requires cross-browser compatibility to work effectively. This article aims to tackle this challenge by exploring issues and providing solutions for achieving rotation using jQuery.animate().
jQuery Rotate Issue
The provided code snippet demonstrates how CSS transforms are incompatible with jQuery.animate(). While css() can successfully rotate elements, animate() fails to do so.
Solution
The solution involves utilizing the step callback within the animation. This callback provides access to the current animation position, allowing us to manually apply the rotation transform with CSS. Here's the modified code:
function AnimateRotate(angle) {
// Get the jQuery object for better performance
var $elem = $('#MyDiv2');
// Use a pseudo object for animation, starting from `0` to `angle`
$({ deg: 0 }).animate({ deg: angle }, {
duration: 2000,
step: function(now) {
// Set the rotation using the CSS transform property
$elem.css({
transform: 'rotate(' + now + 'deg)'
});
}
});
}
jQuery Plugin for Convenience
To simplify usage, a jQuery plugin can be created:
$.fn.animateRotate = function(angle, duration, easing, complete) {
return this.each(function() {
var $elem = $(this);
$({ deg: 0 }).animate({ deg: angle }, {
duration: duration,
easing: easing,
step: function(now) {
$elem.css({
transform: 'rotate(' + now + 'deg)'
});
},
complete: complete || $.noop
});
});
};
Advanced Features
Optimized Order of Arguments:
The plugin's updated version supports an optimized order for arguments: angle, duration, easing, complete.
Toggle Functionality:
For scenarios requiring toggling rotation back and forth, a start parameter can be added to the function, allowing for more flexibility.
Conclusion:
The provided solutions effectively resolve the issue of rotating elements with jQuery.animate(). By leveraging the step callback and creating a jQuery plugin, developers can easily achieve cross-browser compatibility for CSS rotation.
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