javascript web workers - 我如何传递参数？
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javascript web workers - how do I pass arguments?
提问by Joe
Found the answer some some of my problems, html5 web workers!!!
找到了我的一些问题的答案，html5 网络工作者！！！
How do I pass an argument to a web worker though using this basic example?
尽管使用这个基本示例，我如何将参数传递给网络工作者？
contents of worker.js:
worker.js 的内容：
function doSomething() {
postMessage( ' done');
}
setTimeout ( "doSomething()", 3000 );
js code:
js代码：
var worker = new Worker('worker.js');
worker.onmessage = function (event) {
alert(event.data);
};
回答by ?ime Vidas
As you can see you have the same mechanism for both worker-to-main and main-to-worker messages.
如您所见，对于 worker-to-main 和 main-to-worker 消息，您具有相同的机制。
- the
postMessagemethod for sending messages - the
onmessagemember for defining the handler that receives the messages
postMessage发送消息的方法onmessage用于定义接收消息的处理程序的成员
In the main script:
在主脚本中：
worker.postMessage(data);
In the worker script:
在工作脚本中：
self.addEventListener("message", function(e) {
// the passed-in data is available via e.data
}, false);
... or just...
... 要不就...
onmessage = function(e) {
// the passed-in data is available via e.data
};
It may be that data has to be a string... (Firefox 3.5+ supports passing in JSON-compatible objects)
可能数据必须是字符串...（Firefox 3.5+ 支持传入与 JSON 兼容的对象）
回答by Jozcar
var worker = new Worker(window.App.baseUrl + '/Scripts/signature/GetCurrenProductWorker.js');
worker.postMessage(window.App.baseUrl)
var _base_url = ''
var xhr = new XMLHttpRequest();
onmessage = function (e) {
_base_url = e.data
xhr.open("GET", _base_url + "/api/product/Get");
xhr.onload = function () {
postMessage(xhr.responseText);
};
xhr.send();
};
this work for me
这对我有用
