animation js控制 缓动效果
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>缓动效果</title>
</head>
<body>
<div id="btn" style=‘position:absolute;‘>按钮</div>
<script type="text/javascript">
var effect = {
insertBtn: document.getElementById("btn"),
};
effect.insertBtn.onclick = function(){
number(effect.insertBtn,18,100);
};
var number = function(node,minnum,maxnum){
var left = minnum;
var step = function(){
left+=1;
node.style.left = left + "px";
if(left < maxnum){
setTimeout(step,10);
}else{
setTimeout(stepReverse,10);
}
};
var stepReverse = function(){
left-=1;
node.style.left = left + "px";
if(left > minnum){
setTimeout(stepReverse,10);
}else{
// node.style.display = "none";
}
};
setTimeout(step,10);
};
</script>
</body>
</html>
<div id="box" style="position:absolute;">Hello!</div> <script> var timers = { timerID: 0, timers: [], delay:100, maxnum:200, minnum:0, start: function(){ // console.log(this.timerID) if ( this.timerID ){ return; } (function(){ for ( var i = 0; i < timers.timers.length; i++ ){ if ( timers.timers[i]() === false ) { timers.timers.splice(i, 1); i--; } } timers.timerID = setTimeout( arguments.callee, timers.delay ); })(); }, stop: function(){ clearTimeout( this.timerID ); this.timerID = 0; }, add: function(fn){ this.timers.push( fn ); this.start(); } }; var box = document.getElementById("box"), left = 0, top = 20; timers.add(function(){ box.style.left = left + "px"; if ( ++left > timers.maxnum ){ return false; } var step = function(){ left+=1; box.style.left = left + "px"; if(left < timers.maxnum){ setTimeout(step,10); console.log(11) }else{ setTimeout(stepReverse,10); console.log(22) } }; var stepReverse = function(){ left-=1; box.style.left = left + "px"; if(left > timers.minnum){ console.log(4444) setTimeout(stepReverse,10); }else{ setTimeout(step,10); // box.style.display = "none"; } console.log(3333) }; setTimeout(step,10); }); // timers.add(function(){ // box.style.top = top + "px"; // top += 2; // if ( top > 180 ){ // return false; // } // }); </script>
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