代码展示

• 节流函数

function throttle(fn,time){    var startTime = new Date();        return function(){            var time_ = (new Date() - startTime) >= time;            if(time_){                fn.apply(this);                startTime = new Date();        }    }}function fn(){    console.log("触发了事件");}window.onscroll = throttle(fn,1000);

• 高阶函数、偏函数

function makeUniqueStringFunction(start) {  var COUNTER = start;  return function(prefix) {    return [prefix, COUNTER++].join('');  }};var uniqueString = makeUniqueStringFunction(0);uniqueString("dari");//=> "dari0"uniqueString("dari");//=> "dari1"