javascript 函数防抖、函数节流

函数防抖（debounce ）

var debounce = function(idle, action){
    var last;
    return function(){
        var that = this, args = arguments;
        clearTimeout(last);
        last = setTimeout(function(){
            action.apply(that, args);
        }, idle);
    };
};

var handle = debounce(2000,function(){
    console.log('########## '+arguments[0]+' ###########');
});

document.body.onclick= function() {
    console.log('click');
    handle('to do something');
};

函数节流

var throttle = function(delay, action){
    var last = 0;
    return function(){
        var curr = +new Date();
        if (curr - last > delay){
            action.apply(this, arguments);
            last = curr;
        }
    };
};

var handle = throttle(2000,function(){
    console.log('########## '+arguments[0]+' ###########');
});

document.body.onclick= function() {
    console.log('click');
    handle('to do something');
};