web worker

在work.html中

var data = [1,2,3,4],
            worker = new Worker('work1.js');
    worker.onmessage = function(e){
        var data = e.data;
        console.log('sorted:' + data);
    }

    worker.postMessage(data);

在work1.js中

self.onmessage = function(e){
    var data = e.data;
    data.sort(function(a,b){
        return b-a;
    });

    self.postMessage(data);
}
importScripts('w2.js','w1.js');
//异步下载，但是按照顺序执行