Is there a way to accomplish this? To start, take a look at the following code...
function flutter() {
var random = Math.floor(Math.random()*5);
var $obj = $('.bird');
$obj.animate({ top :'-=' + random + 'px' }, 20, flutter);
}
</script>
In the above code snippet, my objective is to reverse the value of random when the callback is executed. The end goal is to create a fluttering effect by moving the Class bird up and down.
If you want to add some animation effects, you can achieve it using the following closure method:
$obj.animate({ top :'-=' + random + 'px' }, 20, function(){
flutter(random*-1);
});
Here is the complete code snippet for your reference:
function flutter(offset) {
var random = ( isNaN(offset) ) ? Math.floor(Math.random()*5) : (offset) ;
var $obj = $('.bird');
$obj.animate({ top :'-=' + random + 'px' }, 20, function(){
flutter(random*-1);
});
}
To initiate the animation, simply call: flutter();
I made some modifications to the flutter function in order to enhance its efficiency and user-friendliness.
function flutter(distance, target) {
// You can now invoke flutter without providing arguments, eliminating the need for repetitive element finding
var random = distance || Math.floor(Math.random()*5);
var $obj = target || $('.bird');
$obj.animate({ top :'-=' + random + 'px' }, 20, function(){
flutter(-random, $obj);
});
}
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