<!DOCTYPE html>
<html>
<head>
<title>Throttle</title>
</head>
<body>
<script type="text/javascript">
n=0;
function resizehandler(){
console.log(new Date().getTime());
console.log(++n);
}
window.onresize=resizehandler;
</script>
</body>
</html>
function throttle(method,context){
clearTimeout(method.tId);
method.tId=setTimeout(function(){
method.call(context);
},500);
}
<script type="text/javascript">
n=0;
function resizehandler(){
console.log(new Date().getTime());
console.log(++n);
}
function throttle(method,context){
clearTimeout(method.tId);
method.tId=setTimeout(function(){
method.call(context);
},500);
}
window.onresize=function(){
throttle(resizehandler,window);
};
</script>
function throttle(method,delay){
var timer=null;
return function(){
var context=this, args=arguments;
clearTimeout(timer);
timer=setTimeout(function(){
method.apply(context,args);
},delay);
}
}
<script type="text/javascript">
n=0;
function resizehandler(){
console.log(new Date().getTime());
console.log(++n);
}
function throttle(method,delay){
var timer=null;
return function(){
var context=this, args=arguments;
clearTimeout(timer);
timer=setTimeout(function(){
method.apply(context,args);
},delay);
}
}
window.onresize=throttle(resizehandler,500);//因为返回函数句柄,不用包装函数了
</script>
function throttle(method,delay,duration){
var timer=null, begin=new Date();
return function(){
var context=this, args=arguments, current=new Date();;
clearTimeout(timer);
if(current-begin>=duration){
method.apply(context,args);
begin=current;
}else{
timer=setTimeout(function(){
method.apply(context,args);
},delay);
}
}
}
window.onresize=throttle(resizehandler,100,200);
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