caoke90/series

chang your tasks anywhere

series

chang your tasks anywhere //js同步流程变换 var series=function(arr,i){ function async(i){ arr[i](function(ci){ if(Object.prototype.toString.call(ci)=="[object Number]"){ ci=ci }else{ ci=i+1 } if(ci<arr.length){ async(ci) } },i) } async(i||0) } //demo var task1=function(callback,i){ console.log(i)//=>当前位置 setTimeout(function(){ console.log("21") callback(i+2) //直接跳转到task3 牛B吧 },500) } var task2=function(callback,i){ console.log(i)//=>当前位置 setTimeout(function(){ console.log("22") callback() },500) } var task3=function(callback,i){ console.log(i)//=>当前位置 setTimeout(function(){ console.log("23") callback() },500) } var arrTasks=[task1,task2,task3] series(arrTasks)