{"id":753,"date":"2021-07-10T16:44:42","date_gmt":"2021-07-10T08:44:42","guid":{"rendered":"http:\/\/blog.xrhoujie.com\/?p=753"},"modified":"2021-06-09T16:46:35","modified_gmt":"2021-06-09T08:46:35","slug":"%e8%bd%acpostmessage%e5%8f%af%e5%a4%aa%e6%9c%89%e7%94%a8%e4%ba%86","status":"publish","type":"post","link":"http:\/\/blog.xrhoujie.com\/?p=753","title":{"rendered":"(\u8f6c)postMessage\u53ef\u592a\u6709\u7528\u4e86"},"content":{"rendered":"
\n
\n

\u524d\u8a00: \u672c\u7bc7\u6587\u7ae0\u6211\u5c06\u5e26\u5927\u5bb6\u4e00\u8d77\u6765\u597d\u597d\u8ba4\u8bc6\u4e00\u4e0bpostMessage,\u5305\u62ec\u5b83\u7684\u517c\u5bb9\u6027,\u5bf9\u5e94\u7684API\u4ecb\u7ecd,\u4ee5\u53ca\u5e38\u89c1\u7684\u51e0\u4e2a\u4f7f\u7528\u573a\u666f,\u5e0c\u671b\u53ef\u4ee5\u7ed9\u6709\u540c\u6837\u56f0\u60d1\u7684\u76c6\u53cb\u4eec\u4e00\u70b9\u542f\u53d1,\u7ed9\u9700\u8981\u7528\u8fd9\u4e2a\u6280\u672f\u7684\u540c\u50da\u4eec\u4e00\u4e9b\u5e2e\u52a9.<\/p>\n

postMessage\u7684\u5b9a\u4e49<\/p>\n

postMessage\u662fhtml5\u5f15\u5165\u7684API,postMessage()\u65b9\u6cd5\u5141\u8bb8\u6765\u81ea\u4e0d\u540c\u6e90\u7684\u811a\u672c\u91c7\u7528\u5f02\u6b65\u65b9\u5f0f\u8fdb\u884c\u6709\u6548\u7684\u901a\u4fe1,\u53ef\u4ee5\u5b9e\u73b0\u8de8\u6587\u672c\u6587\u6863,\u591a\u7a97\u53e3,\u8de8\u57df\u6d88\u606f\u4f20\u9012.\u591a\u7528\u4e8e\u7a97\u53e3\u95f4\u6570\u636e\u901a\u4fe1,\u8fd9\u4e5f\u4f7f\u5b83\u6210\u4e3a\u8de8\u57df\u901a\u4fe1\u7684\u4e00\u79cd\u6709\u6548\u7684\u89e3\u51b3\u65b9\u6848.<\/p>\n

postMessage\u7684\u517c\u5bb9\u6027<\/p>\n

\u4e0b\u56fe\u662f\u5728caniuse\u4e0a\u9762\u641c\u5230\u7684postMessage\u517c\u5bb9\u6027\u622a\u56fe,\u9664IE\u6d4f\u89c8\u5668\u7684\u652f\u6301\u5ea6\u6bd4\u8f83\u4f4e\u5916,,\u5176\u4ed6\u6d4f\u89c8\u5668\u7684\u652f\u6301\u5ea6\u826f\u597d.<\/p>\n

\n
\n
<\/div>\n
<\/div>\n<\/div>\n
<\/div>\n<\/div>\n

postMessage API\u4ecb\u7ecd<\/p>\n

\u53d1\u9001\u6570\u636e:<\/p>\n

otherWindow.postMessage(message, targetOrigin, [transfer]);<\/p>\n

otherWindow<\/p>\n

\u7a97\u53e3\u7684\u4e00\u4e2a\u5f15\u7528,\u6bd4\u5982iframe\u7684contentWindow\u5c5e\u6027,\u6267\u884cwindow.open\u8fd4\u56de\u7684\u7a97\u53e3\u5bf9\u8c61,\u6216\u8005\u662f\u547d\u540d\u8fc7\u7684\u6216\u6570\u503c\u7d22\u5f15\u7684window.frames.<\/p>\n

message<\/p>\n

\u8981\u53d1\u9001\u5230\u5176\u4ed6\u7a97\u53e3\u7684\u6570\u636e,\u5b83\u5c06\u4f1a\u88ab[!\u7ed3\u6784\u5316\u514b\u9686\u7b97\u6cd5](https:\/\/developer.mozilla.org\/en-US\/docs\/DOM\/The_structured_clone_algorithm)\u5e8f\u5217\u5316.\u8fd9\u610f\u5473\u7740\u4f60\u53ef\u4ee5\u4e0d\u53d7\u4ec0\u4e48\u9650\u5236\u7684\u5c06\u6570\u636e\u5bf9\u8c61\u5b89\u5168\u7684\u4f20\u9001\u7ed9\u76ee\u6807\u7a97\u53e3\u800c\u65e0\u9700\u81ea\u5df1\u5e8f\u5217\u5316.<\/p>\n

targetOrigin<\/p>\n

\u901a\u8fc7\u7a97\u53e3\u7684origin\u5c5e\u6027\u6765\u6307\u5b9a\u54ea\u4e9b\u7a97\u53e3\u80fd\u63a5\u6536\u5230\u6d88\u606f\u4e8b\u4ef6,\u6307\u5b9a\u540e\u53ea\u6709\u5bf9\u5e94origin\u4e0b\u7684\u7a97\u53e3\u624d\u53ef\u4ee5\u63a5\u6536\u5230\u6d88\u606f,\u8bbe\u7f6e\u4e3a\u901a\u914d\u7b26”*”\u8868\u793a\u53ef\u4ee5\u53d1\u9001\u5230\u4efb\u4f55\u7a97\u53e3,\u4f46\u901a\u5e38\u5904\u4e8e\u5b89\u5168\u6027\u8003\u8651\u4e0d\u5efa\u8bae\u8fd9\u4e48\u505a.\u5982\u679c\u60f3\u8981\u53d1\u9001\u5230\u4e0e\u5f53\u524d\u7a97\u53e3\u540c\u6e90\u7684\u7a97\u53e3,\u53ef\u8bbe\u7f6e\u4e3a”\/”<\/p>\n

transfer | \u53ef\u9009\u5c5e\u6027<\/p>\n

\u662f\u4e00\u4e32\u548cmessage\u540c\u65f6\u4f20\u9012\u7684**Transferable**\u5bf9\u8c61,\u8fd9\u4e9b\u5bf9\u8c61\u7684\u6240\u6709\u6743\u5c06\u88ab\u8f6c\u79fb\u7ed9\u6d88\u606f\u7684\u63a5\u6536\u65b9,\u800c\u53d1\u9001\u4e00\u65b9\u5c06\u4e0d\u518d\u4fdd\u6709\u6240\u6709\u6743.<\/p>\n

\u63a5\u6536\u6570\u636e: \u76d1\u542cmessage\u4e8b\u4ef6\u7684\u53d1\u751f<\/p>\n

window.addEventListener(“message”, receiveMessage, false) ;<\/p>\n

function receiveMessage(event) {<\/p>\n

var origin= event.origin;<\/p>\n

console.log(event);<\/p>\n

}<\/p>\n

event\u5bf9\u8c61\u7684\u6253\u5370\u7ed3\u679c\u622a\u56fe\u5982\u4e0b:<\/p>\n

\n
\n
<\/div>\n
<\/div>\n<\/div>\n
<\/div>\n<\/div>\n

\u8fd9\u91cc\u91cd\u70b9\u4ecb\u7ecdevent\u5bf9\u8c61\u7684\u56db\u4e2a\u5c5e\u6027<\/p>\n

data :<\/b>\u00a0\u6307\u7684\u662f\u4ece\u5176\u4ed6\u7a97\u53e3\u53d1\u9001\u8fc7\u6765\u7684\u6d88\u606f\u5bf9\u8c61;<\/p>\n

type:\u00a0<\/b>\u6307\u7684\u662f\u53d1\u9001\u6d88\u606f\u7684\u7c7b\u578b;<\/p>\n

source:<\/b>\u00a0\u6307\u7684\u662f\u53d1\u9001\u6d88\u606f\u7684\u7a97\u53e3\u5bf9\u8c61;<\/p>\n

origin: \u00a0<\/b>\u6307\u7684\u662f\u53d1\u9001\u6d88\u606f\u7684\u7a97\u53e3\u7684\u6e90<\/p>\n

postMessage\u7684\u4f7f\u7528\u573a\u666f<\/p>\n

\u573a\u666f\u4e00 \u8de8\u57df\u901a\u4fe1(\u5305\u62ecGET\u8bf7\u6c42\u548cPOST\u8bf7\u6c42)<\/p>\n

\u6211\u4eec\u90fd\u77e5\u9053JSONP\u53ef\u4ee5\u5b9e\u73b0\u89e3\u51b3GET\u8bf7\u6c42\u7684\u8de8\u57df\u95ee\u9898,\u4f46\u662f\u4e0d\u80fd\u89e3\u51b3POST\u8bf7\u6c42\u7684\u8de8\u57df\u95ee\u9898.\u800cpostMessage\u90fd\u53ef\u4ee5.\u8fd9\u91cc\u53ea\u662f\u5217\u4e3e\u4e00\u4e2a\u793a\u4f8b,\u4ec5\u4f9b\u53c2\u8003,\u5177\u4f53\u7684\u4ee3\u7801\u5982\u4f55\u7f16\u5199\u8981\u4ee5\u5177\u4f53\u7684\u573a\u666f\u800c\u5b9a\u5965~<\/p>\n

\u7236\u7a97\u4f53\u521b\u5efa\u8de8\u57dfiframe\u5e76\u53d1\u9001\u4fe1\u606f<\/b><\/p>\n

<!DOCTYPE html><\/p>\n

<html><\/p>\n

<head><\/p>\n

<meta charset=”utf-8″><\/p>\n

<meta http-equiv=”X-UA-Compatible” content=”IE=edge”><\/p>\n

<title>\u8de8\u57dfPOST\u6d88\u606f\u53d1\u9001<\/title><\/p>\n

<script type=”text\/JavaScript”><\/p>\n

\/\/ sendPost \u901a\u8fc7postMessage\u5b9e\u73b0\u8de8\u57df\u901a\u4fe1\u5c06\u8868\u5355\u4fe1\u606f\u53d1\u9001\u5230 moweide.gitcafe.io\u4e0a,<\/p>\n

\/\/ \u5e76\u53d6\u5f97\u8fd4\u56de\u7684\u6570\u636e<\/p>\n

function sendPost() {<\/p>\n

\/\/ \u83b7\u53d6id\u4e3aotherPage\u7684iframe\u7a97\u53e3\u5bf9\u8c61<\/p>\n

var iframeWin = document.getElementById(“otherPage”).contentWindow;<\/p>\n

\/\/ \u5411\u8be5\u7a97\u53e3\u53d1\u9001\u6d88\u606f<\/p>\n

iframeWin.postMessage(document.getElementById(“message”).value, ‘http:\/\/moweide.gitcafe.io’);<\/p>\n

}<\/p>\n

\/\/ \u76d1\u542c\u8de8\u57df\u8bf7\u6c42\u7684\u8fd4\u56de<\/p>\n

window.addEventListener(“message”, function(event) {<\/p>\n

console.log(event, event.data);<\/p>\n

}, false);<\/p>\n

<\/script><\/p>\n

<\/head><\/p>\n

<body><\/p>\n

<textarea id=”message”><\/textarea><\/p>\n

<input type=”button” value=”\u53d1\u9001” onclick=”sendPost()”><\/p>\n

<iframe<\/p>\n

src=”http:\/\/moweide.gitcafe.io\/other-domain.html” id=”otherPage” style=”display:none”><\/iframe><\/p>\n

<\/body><\/p>\n

<\/html><\/p>\n

\u5b50\u7a97\u4f53\u63a5\u6536\u4fe1\u606f\u5e76\u5904\u7406<\/b><\/p>\n

<!DOCTYPE html><\/p>\n

<html><\/p>\n

<head><\/p>\n

<meta charset=”utf-8″><\/p>\n

<meta http-equiv=”X-UA-Compatible” content=”IE=edge”><\/p>\n

<title>POST Handler<\/title><\/p>\n

<script src=”\/\/code.jquery.com\/jquery-1.11.0.min.js”><\/script><\/p>\n

<script type=”text\/JavaScript”><\/p>\n

window.addEventListener(“message”, function( event ) {<\/p>\n

\/\/ \u76d1\u542c\u7236\u7a97\u53e3\u53d1\u9001\u8fc7\u6765\u7684\u6570\u636e\u5411\u670d\u52a1\u5668\u53d1\u9001post\u8bf7\u6c42<\/p>\n

var data = event.data;<\/p>\n

$.ajax({<\/p>\n

\/\/ \u6ce8\u610f\u8fd9\u91cc\u7684url\u53ea\u662f\u4e00\u4e2a\u793a\u4f8b.\u5b9e\u9645\u7ec3\u4e60\u7684\u65f6\u5019\u4f60\u9700\u8981\u81ea\u5df1\u60f3\u529e\u6cd5\u63d0\u4f9b\u4e00\u4e2a\u540e\u53f0\u63a5\u53e3<\/p>\n

type: ‘POST’,<\/p>\n

url: ‘http:\/\/moweide.gitcafe.io\/getData’,<\/p>\n

data: “info=” + data,<\/p>\n

dataType: “json”<\/p>\n

}).done(function(res){<\/p>\n

\/\/\u5c06\u8bf7\u6c42\u6210\u529f\u8fd4\u56de\u7684\u6570\u636e\u901a\u8fc7postMessage\u53d1\u9001\u7ed9\u7236\u7a97\u53e3<\/p>\n

window.parent.postMessage(res, “*”);<\/p>\n

}).fail(function(res){<\/p>\n

\/\/\u5c06\u8bf7\u6c42\u5931\u8d25\u8fd4\u56de\u7684\u6570\u636e\u901a\u8fc7postMessage\u53d1\u9001\u7ed9\u7236\u7a97\u53e3<\/p>\n

window.parent.postMessage(res, “*”);<\/p>\n

});<\/p>\n

}, false);<\/p>\n

<\/script><\/p>\n

<\/head><\/p>\n

<body><\/body><\/p>\n

<\/html><\/p>\n

\u573a\u666f\u4e8c \u00a0WebWorker<\/p>\n

JavaScript\u8bed\u8a00\u91c7\u7528\u7684\u662f\u5355\u7ebf\u7a0b\u6a21\u578b,\u901a\u5e38\u6765\u8bf4,\u6240\u6709\u4efb\u52a1\u90fd\u5728\u4e00\u4e2a\u7ebf\u7a0b\u4e0a\u5b8c\u6210,\u4e00\u6b21\u53ea\u80fd\u505a\u4e00\u4ef6\u4e8b,\u540e\u9762\u7684\u4efb\u52a1\u8981\u7b49\u5230\u524d\u9762\u7684\u4efb\u52a1\u88ab\u6267\u884c\u5b8c\u6210\u540e\u624d\u53ef\u4ee5\u5f00\u59cb\u6267\u884c,\u4f46\u662f\u8fd9\u79cd\u65b9\u6cd5\u5982\u679c\u9047\u5230\u590d\u6742\u8d39\u65f6\u7684\u8ba1\u7b97,\u5c31\u4f1a\u5bfc\u81f4\u53d1\u751f\u963b\u585e,\u4e25\u91cd\u963b\u788d\u5e94\u7528\u7a0b\u5e8f\u7684\u6b63\u5e38\u8fd0\u884c.Web Worker\u4e3aweb\u5185\u5bb9\u5728\u540e\u53f0\u7ebf\u7a0b\u4e2d\u8fd0\u884c\u811a\u672c\u63d0\u4f9b\u4e86\u4e00\u79cd\u7b80\u5355\u7684\u65b9\u6cd5,\u7ebf\u7a0b\u53ef\u4ee5\u6267\u884c\u4efb\u52a1\u800c\u4e0d\u5e72\u6270\u7528\u6237\u754c\u9762.\u4e00\u65e6\u521b\u5efa,\u4e00\u4e2aworker\u53ef\u4ee5\u5c06\u6d88\u606f\u53d1\u9001\u5230\u521b\u5efa\u5b83\u7684JavaScript\u4ee3\u7801,\u901a\u8fc7\u6d88\u606f\u53d1\u5e03\u5230\u6539\u4ee3\u7801\u6307\u5b9a\u7684\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f.<\/p>\n

\u4e00\u4e2awoker\u662f\u4f7f\u7528\u4e00\u4e2a\u6784\u9020\u51fd\u6570\u521b\u5efa\u4e00\u4e2a\u5bf9\u8c61,\u8fd0\u884c\u4e00\u4e2a\u547d\u540d\u7684JavaScript\u6587\u4ef6-\u8fd9\u4e2a\u6587\u4ef6\u5c06\u5305\u542b\u5728\u5de5\u4f5c\u7ebf\u7a0b\u4e2d\u8fd0\u884c\u7684\u4ee3\u7801,woker\u8fd0\u884c\u5728\u53e6\u4e00\u4e2a\u5168\u5c40\u4e0a\u4e0b\u6587\u4e2d,\u4e0d\u540c\u4e8e\u5f53\u524d\u7684window,\u4e0d\u80fd\u4f7f\u7528window\u6765\u83b7\u53d6\u5168\u5c40\u5c5e\u6027.<\/p>\n

\u4e00\u4e9b\u5c40\u9650\u6027<\/b><\/p>\n

\u53ea\u80fd\u52a0\u8f7d\u540c\u6e90\u811a\u672c\u6587\u4ef6,\u4e0d\u80fd\u76f4\u63a5\u64cd\u4f5cDOM\u8282\u70b9<\/p>\n

Worker \u7ebf\u7a0b\u4e0d\u80fd\u6267\u884calert()\u65b9\u6cd5\u548cconfirm()\u65b9\u6cd5\uff0c\u4f46\u53ef\u4ee5\u4f7f\u7528 XMLHttpRequest \u5bf9\u8c61\u53d1\u51fa AJAX \u8bf7\u6c42<\/p>\n

\u65e0\u6cd5\u8bfb\u53d6\u672c\u5730\u6587\u4ef6,\u53ea\u80fd\u52a0\u8f7d\u7f51\u7edc\u6587\u4ef6<\/p>\n

\u4e5f\u4e0d\u80fd\u4f7f\u7528window\u5bf9\u8c61\u7684\u9ed8\u8ba4\u65b9\u6cd5\u548c\u5c5e\u6027,\u7136\u800c\u4f60\u53ef\u4ee5\u4f7f\u7528\u5927\u91cfwindow\u5bf9\u8c61\u4e4b\u4e0b\u7684\u4e1c\u897f,\u5305\u62ecwebSocket,indexedDB\u4ee5\u53caFireFoxOS\u4e13\u7528\u7684D\u963f\u5854Store API\u7b49\u6570\u636e\u5b58\u50a8\u673a\u5236.\u67e5\u770bFunctions and classes available to workers<\/a>\u83b7\u53d6\u8be6\u60c5\u3002<\/p>\n

workers\u548c\u4e3b\u7ebf\u7a0b\u95f4\u7684\u6570\u636e\u4f20\u9012\u901a\u8fc7\u8fd9\u6837\u7684\u6d88\u606f\u673a\u5236\u8fdb\u884c\u2014\u2014\u53cc\u65b9\u90fd\u4f7f\u7528postMessage()\u65b9\u6cd5\u53d1\u9001\u5404\u81ea\u7684\u6d88\u606f\uff0c\u4f7f\u7528onmessage\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u6765\u54cd\u5e94\u6d88\u606f\uff08\u6d88\u606f\u88ab\u5305\u542b\u5728Message<\/a>\u4e8b\u4ef6\u7684data\u5c5e\u6027\u4e2d\uff09\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\u6570\u636e\u5e76\u4e0d\u662f\u88ab\u5171\u4eab\u800c\u662f\u88ab\u590d\u5236;woker\u5206\u4e3a\u4e13\u7528worker\u548c\u5171\u4eabworker,\u4e00\u4e2a\u4e13\u7528worker\u7d27\u6025\u80fd\u88ab\u9996\u6b21\u751f\u6210\u5b83\u7684\u811a\u672c\u4f7f\u7528,\u800c\u5171\u4eabwoker\u53ef\u4ee5\u540c\u65f6\u88ab\u591a\u4e2a\u811a\u672c\u4f7f\u7528.<\/p>\n

\u4e13\u7528woker\u4f7f\u7528\u793a\u4f8b:<\/p>\n

\/\/ main.js<\/p>\n

if(window.Worker) {<\/p>\n

var myWorker = new Worker(‘http:\/\/xxx.com\/worker.js’);<\/p>\n

\/\/ \u53d1\u9001\u6d88\u606f<\/p>\n

first.onchange = function() {<\/p>\n

myWorker.postMessage([first.value, second.value]);<\/p>\n

console.log(“Message posted to worker”);<\/p>\n

}<\/p>\n

second.onchange = function() {<\/p>\n

myWorker.postMessage([first.value,second.value]);<\/p>\n

console.log(‘Message posted to worker’);<\/p>\n

}<\/p>\n

\/\/ \u4e3b\u7ebf\u7a0b \u76d1\u542conmessage\u4ee5\u54cd\u5e94worker\u56de\u4f20\u7684\u6d88\u606f<\/p>\n

myWorker.onmessage = function (e) {<\/p>\n

var textContent = e.data;<\/p>\n

console.log(“message received from worker”);<\/p>\n

}<\/p>\n

}<\/p>\n

\/\/ worker.js<\/p>\n

\/\/ \u5185\u7f6eselfduixiang,,\u4ee3\u8868\u5b50\u7ebf\u7a0b\u672c\u8eab, worker\u5185\u90e8\u8981\u52a0\u8f7d\u5176\u4ed6\u811a\u672c,\u53ef\u901a\u8fc7importScripts()\u65b9\u6cd5<\/p>\n

onmessage = function(e) {<\/p>\n

console.log(“message received from main script”);<\/p>\n

var workerResult = “Result: ” + (e.data[0] * e.data[1]);<\/p>\n

console.log(“posting message\\back to main script”);<\/p>\n

postMessage(workerResult);<\/p>\n

}<\/p>\n

Web Worker\u7684\u4f7f\u7528\u573a\u666f,\u7528\u4e8e\u6536\u96c6\u57cb\u70b9\u6570\u636e,\u53ef\u4ee5\u7528\u4e8e\u5927\u91cf\u590d\u6742\u7684\u6570\u636e\u8ba1\u7b97,\u590d\u6742\u7684\u56fe\u50cf\u5904\u7406,\u5927\u6570\u636e\u7684\u5904\u7406.\u56e0\u4e3a\u5b83\u4e0d\u4f1a\u963b\u788d\u4e3b\u7ebf\u7a0b\u7684\u6b63\u5e38\u6267\u884c\u548c\u9875\u9762UI\u7684\u6e32\u67d3.<\/p>\n

\u57cb\u70b9\u6570\u636e\u91c7\u96c6\u4e0b\u7684\u4f7f\u7528: \u53ef\u5728main.js\u4e2d\u6536\u96c6\u6570\u636e,\u5c06\u6536\u96c6\u5230\u7684\u4fe1\u606f\u901a\u8fc7postMessage\u7684\u65b9\u5f0f\u53d1\u9001\u7ed9worker.js,\u5728woker.js\u4e2d\u8fdb\u884c\u76f8\u5173\u8fd0\u7b97\u548c\u6574\u7406\u5e76\u53d1\u9001\u5230\u670d\u52a1\u5668\u7aef;\u5f53\u7136,\u4e0d\u4f7f\u7528Web Woker,\u901a\u8fc7\u5728\u5355\u9875\u9762\u5e94\u7528\u4e2d\u7684index.html\u4e2d\u521b\u5efaiframe\u4e5f\u53ef\u4ee5\u5b9e\u73b0\u9875\u9762\u95f4\u5207\u6362,\u9875\u9762\u505c\u7559\u65f6\u957f\u7b49\u6570\u636e\u7684\u91c7\u96c6,\u5177\u4f53\u7684\u5b9e\u73b0\u6211\u5c31\u4e0d\u7ec6\u8bb2\u4e86,\u611f\u5174\u8da3\u7684\u540c\u5b66\u53ef\u5728\u7f51\u4e0a\u641c\u7d22\u89e3\u51b3\u65b9\u6848,\u6709\u4ec0\u4e48\u7591\u95ee\u6b22\u8fce\u79c1\u4fe1\u6211~~~<\/p>\n

\u573a\u666f\u4e09\u00a0 Service Worker<\/p>\n

\u53ef\u5728\u6d4f\u89c8\u5668\u63a7\u5236\u53f0\u7684application\u4e2d\u91cc\u770b\u5230Service Worker\u7684\u5b58\u5728<\/p>\n

\n
\n
<\/div>\n
<\/div>\n<\/div>\n
<\/div>\n<\/div>\n

Service Worker\u662fweb\u5e94\u7528\u505a\u79bb\u7ebf\u5b58\u50a8\u7684\u4e00\u4e2a\u6700\u4f73\u7684\u89e3\u51b3\u65b9\u6848,Service Worker\u548cWeb Worker\u7684\u76f8\u540c\u70b9\u662f\u5728\u5e38\u89c4\u7684js\u5f15\u64ce\u7ebf\u7a0b\u4ee5\u5916\u5f00\u8f9f\u4e86\u65b0\u7684js\u7ebf\u7a0b\u53bb\u5904\u7406\u4e00\u4e9b\u4e0d\u9002\u5408\u5728\u4e3b\u7ebf\u7a0b\u4e0a\u5904\u7406\u7684\u4e1a\u52a1,\u4e0d\u540c\u70b9\u4e3b\u8981\u5305\u62ec\u4ee5\u4e0b\u51e0\u70b9:<\/p>\n

Web Worker\u5f0f\u670d\u52a1\u4e8e\u7279\u5b9a\u9875\u9762\u7684,\u800cService Worker\u5728\u88ab\u6ce8\u518c\u5b89\u88c5\u4e4b\u540e\u80fd\u591f\u5728\u591a\u4e2a\u9875\u9762\u4f7f\u7528<\/p>\n

Service Worker\u5e38\u9a7b\u5728\u6d4f\u89c8\u5668\u4e2d,\u4e0d\u4f1a\u56e0\u4e3a\u9875\u9762\u7684\u5173\u95ed\u800c\u88ab\u9500\u6bc1.\u672c\u8d28\u4e0a,\u5b83\u662f\u4e00\u4e2a\u540e\u53f0\u7ebf\u7a0b,\u53ea\u6709\u4f60\u4e3b\u52a8\u7ec8\u7ed3,\u6216\u8005\u6d4f\u89c8\u5668\u56de\u6536,\u8fd9\u4e2a\u7ebf\u7a0b\u624d\u4f1a\u7ed3\u675f.<\/p>\n

\u751f\u547d\u5468\u671f,\u53ef\u8c03\u7528\u7684API\u4e5f\u4e0d\u540c<\/p>\n

\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Service Worker\u6765\u8fdb\u884c\u7f13\u5b58,\u7528js\u6765\u62e6\u622a\u6d4f\u89c8\u5668\u7684http\u8bf7\u6c42,\u5e76\u8bbe\u7f6e\u7f13\u5b58\u7684\u6587\u4ef6,\u4ece\u800c\u521b\u5efa\u79bb\u7ebfweb\u5e94\u7528.\u5173\u4e8eService Worker\u7684\u6982\u5ff5\u7684\u4ecb\u7ecd\u5c31\u5230\u8fd9\u91cc~~,\u611f\u5174\u8da3\u7684\u53ef\u4ee5\u627e\u76f8\u5173\u6587\u7ae0\u5b66\u4e60,\u6709\u7591\u95ee\u7684\u6b22\u8fce\u79c1\u4fe1\u4e0e\u6211\u63a2\u8ba8~,\u8fd9\u91cc\u6211\u4eec\u4e3b\u8981\u4ecb\u7ecd\u7684\u662f\u4f7f\u7528postMessage\u65b9\u6cd5\u8fdb\u884cService Worker\u548c\u9875\u9762\u4e4b\u95f4\u7684\u901a\u8baf.<\/p>\n

\u4ece\u9875\u9762\u53d1\u9001\u4fe1\u606f\u5230Service Worker<\/b><\/p>\n

\u9700\u8981\u6ce8\u610f\u4e00\u70b9,\u8fd9\u4e2a\u9875\u9762\u5982\u679c\u76f4\u63a5\u6254\u8fdb\u6d4f\u89c8\u5668\u91cc(\u4f7f\u7528\u7684\u662ffile\u534f\u8bae)\u6253\u5f00\u662f\u4f1a\u62a5\u9519\u7684,\u8981\u4f7f\u7528nginx\u505a\u7aef\u53e3\u6620\u5c04,\u6216\u8005\u7528node\u642d\u5efa\u4e00\u4e2a\u670d\u52a1\u5668(\u4f7f\u7528http\u534f\u8bae)\u6765\u8bbf\u95ee\u8be5\u9875\u9762(\u76ee\u524d\u6211\u731c\u6d4b\u7684\u539f\u56e0\u662f\u6d4f\u89c8\u5668\u5bf9file\u534f\u8bae\u6253\u5f00\u7684\u6587\u4ef6\u505a\u4e86\u4e00\u4e9b\u670d\u52a1\u7684\u9650\u5236,\u5982\u679c\u6709\u5927\u4f6c\u77e5\u9053\u5177\u4f53\u539f\u56e0\u8fd8\u671b\u544a\u77e5).\u4e0b\u6587\u4e5f\u5c06\u9644\u4e0a\u6211\u7684nginx\u505a\u7aef\u53e3\u6620\u5c04\u7684\u914d\u7f6e.<\/p>\n

<!DOCTYPE html><\/p>\n

<html><\/p>\n

<head><\/p>\n

<meta charset=”utf-8″><\/p>\n

<meta http-equiv=”X-UA-Compatible” content=”IE=edge”><\/p>\n

<title>Service Worker\u8de8\u7a97\u53e3\u901a\u4fe1<\/title><\/p>\n

<\/head><\/p>\n

<body><\/p>\n

<textarea id=”showArea”><\/textarea><\/p>\n

<script src=”sw1.js”><\/script><\/p>\n

<script src=”sw2.js”><\/script><\/p>\n

<script type=”text\/JavaScript”><\/p>\n

if(‘serviceWorker’ in window.navigator) {<\/p>\n

\/\/ \u5bf9\u4e8e\u591a\u4e2a\u4e0d\u540cscope\u7684\u591a\u4e2aService Worker,\u6211\u4eec\u4e5f\u53ef\u4ee5\u7ed9\u6307\u5b9a\u7684Service Worker\u53d1\u9001\u6d88\u606f<\/p>\n

navigator.serviceWorker.register(‘.\/sw1.js’, { scope:’.\/sw1′})<\/p>\n

.then(function(reg) {<\/p>\n

console.log(‘success’, reg);<\/p>\n

return new Promise((resolve, reject) => {<\/p>\n

const interval = setInterval(function() {<\/p>\n

if(reg.active) {<\/p>\n

clearInterval(interval);<\/p>\n

resolve(reg.active);<\/p>\n

}<\/p>\n

}, 1000);<\/p>\n

}).then(sw => {<\/p>\n

sw.postMessage(“this message is from page to sw1”);<\/p>\n

})<\/p>\n

})<\/p>\n

navigator.serviceWorker.register(‘.\/sw2.js’, { scope:’.\/sw2′})<\/p>\n

.then(function(reg) {<\/p>\n

console.log(‘success’, reg);<\/p>\n

return new Promise((resolve, reject) => {<\/p>\n

const interval = setInterval(function() {<\/p>\n

if(reg.active) {<\/p>\n

clearInterval(interval);<\/p>\n

resolve(reg.active);<\/p>\n

}<\/p>\n

}, 1000);<\/p>\n

}).then(sw => {<\/p>\n

sw.postMessage(“this message is from page to sw2”);<\/p>\n

})<\/p>\n

});<\/p>\n

navigator.serviceWorker.addEventListener(‘message’, function (event) {<\/p>\n

console.log(event.data);<\/p>\n

\/\/ \u63a5\u53d7\u6570\u636e\uff0c\u5e76\u586b\u5145\u5728 DOM \u4e2d<\/p>\n

document.getElementById(‘showArea’).value = event.data ;<\/p>\n

});<\/p>\n

}<\/p>\n

<\/script><\/p>\n

<\/body><\/p>\n

<\/html><\/p>\n

\/\/ sw1.js<\/p>\n

self.addEventListener(“message”, function(event) {<\/p>\n

console.log(“sw1.js ” + event.data);<\/p>\n

event.source.postMessage(‘this message is from sw1.js, to page’);<\/p>\n

});<\/p>\n

\/\/ sw2.js<\/p>\n

self.addEventListener(“message”, function(event) {\u00a0 \u00a0 console.log(“sw2.js ” + event.data);\u00a0 \u00a0 event.source.postMessage(‘this message is from sw2.js, to page’);\u00a0 \/\/ event.source\u662f\u6d88\u606f\u6765\u6e90\u9875\u9762\u5bf9\u8c61\u7684\u5f15\u7528});<\/p>\n

nginx\u505a\u7aef\u53e3\u6620\u5c04\u7684\u76f8\u5173\u914d\u7f6e:<\/p>\n

\/\/ nginx.conf<\/p>\n

\/\/ \u56e0\u4e3a\u6709\u591a\u4e2a\u9879\u76ee\u4f1a\u7528\u5230nginx\u670d\u52a1\u505a\u7aef\u53e3\u6620\u5c04<\/p>\n

\/\/ \u6240\u4ee5\u6211\u5728nginx\u7684\u76ee\u5f55\u4e0b\u65b0\u5efa\u4e86conf.d\u7684\u6587\u4ef6\u6765\u5b58\u653e\u6bcf\u4e2a\u9879\u76ee\u7684\u914d\u7f6e.<\/p>\n

\/\/ \u7136\u540e\u5728\u4e3b\u914d\u7f6e\u6587\u4ef6\u91cc\u901a\u8fc7include\u5f15\u5165<\/p>\n

http {<\/p>\n

# \u8fd9\u91cc\u7701\u7565\u4e86\u4e00\u4e9b\u4f60\u672c\u673a\u7535\u8111\u4e0a\u7684nginx\u670d\u52a1\u7684\u914d\u7f6e<\/p>\n

include conf.d\/*.conf;<\/p>\n

}<\/p>\n

\/\/ testHtml.conf<\/p>\n

server {<\/p>\n

listen 9090;<\/p>\n

server_name\u00a0 \u00a0 \u00a0 localhost;<\/p>\n

location \/ {<\/p>\n

root\u00a0 C:\/Users\/hzljie\/Desktop\/test\/testb;<\/p>\n

# \u8fd9\u662f\u6211\u7684\u6d4b\u8bd5\u9875\u9762\u7684\u5b58\u653e\u8def\u5f84,\u8bfb\u8005\u7528\u7684\u65f6\u5019\u8bb0\u5f97\u6839\u636e\u81ea\u5df1\u7684\u6765\u66f4\u6539\u5965<\/p>\n

index\u00a0 test.html test.htm;<\/p>\n

}<\/p>\n

}<\/p>\n

\u8fd0\u884c\u7684\u6548\u679c\u7684\u622a\u56fe:<\/p>\n

\n
\n
<\/div>\n
<\/div>\n<\/div>\n
<\/div>\n<\/div>\n

\u8fd9\u6837\u5c31\u5b9e\u73b0\u4e86Service Worker \u4e0e\u5176\u4ed6\u9875\u9762\u7684\u901a\u4fe1,\u611f\u5174\u8da3\u7684\u5c0f\u4f19\u4f34\u53ef\u4ee5\u4e00\u8d77\u6765\u8bd5\u4e00\u8bd5\u5965.\u5982\u679c\u4f60\u51fa\u73b0\u62a5\u9519\u7684\u60c5\u51b5,\u8981\u4ed4\u7ec6\u68c0\u67e5\u81ea\u5df1\u7684\u4ee3\u7801\u5965~<\/p>\n

\u7ed3\u8bed<\/p>\n

\u55ef,\u82b1\u4e86\u4e00\u756a\u529f\u592b\u7ec8\u4e8e\u603b\u7ed3\u5b8c\u4e86,\u4f46\u662f\u6587\u7ae0\u53ef\u80fd\u4e0d\u591f\u8be6\u5c3d,\u6bd5\u7adf\u4e00\u4e2a\u6280\u672f\u4f1a\u6709\u5f88\u591a\u6269\u5c55\u548c\u5206\u652f\u9886\u57df,\u5f88\u96be\u4e00\u4e00\u4ecb\u7ecd\u6e05\u695a,\u6211\u5199\u535a\u5ba2\u7684\u6c34\u5e73\u4e5f\u8fd8\u6709\u5f85\u63d0\u5347,\u6b22\u8fce\u5bf9\u8fd9\u4e2a\u6709\u7814\u7a76\u6216\u8005\u6709\u5174\u8da3\u6216\u8005\u53d1\u73b0\u6587\u7ae0\u6709\u9519\u8bef\u7684\u5730\u65b9\u7684\u4f19\u4f34\u4eec\u548c\u6211\u4ea4\u6d41,\u5171\u540c\u8fdb\u6b65~~~<\/p>\n<\/div>\n

\u4f5c\u8005\uff1a\u6728\u5b50\u6c34\u5409_08
\n\u94fe\u63a5\uff1ahttps:\/\/www.jianshu.com\/p\/3d8748f85a06
\n\u6765\u6e90\uff1a\u7b80\u4e66
\n\u8457\u4f5c\u6743\u5f52\u4f5c\u8005\u6240\u6709\u3002\u5546\u4e1a\u8f6c\u8f7d\u8bf7\u8054\u7cfb\u4f5c\u8005\u83b7\u5f97\u6388\u6743\uff0c\u975e\u5546\u4e1a\u8f6c\u8f7d\u8bf7\u6ce8\u660e\u51fa\u5904\u3002<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

\u524d\u8a00: \u672c\u7bc7\u6587\u7ae0\u6211\u5c06\u5e26\u5927\u5bb6\u4e00\u8d77\u6765\u597d\u597d\u8ba4\u8bc6\u4e00\u4e0bpostMessage,\u5305\u62ec\u5b83\u7684\u517c\u5bb9\u6027,\u5bf9\u5e94\u7684API\u4ecb\u7ecd,\u4ee5\u53ca\u5e38\u89c1 […]<\/p>\n","protected":false},"author":1,"featured_media":180,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[10,1],"tags":[19],"_links":{"self":[{"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/posts\/753"}],"collection":[{"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=753"}],"version-history":[{"count":1,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/posts\/753\/revisions"}],"predecessor-version":[{"id":754,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/posts\/753\/revisions\/754"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=\/wp\/v2\/media\/180"}],"wp:attachment":[{"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=753"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=753"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.xrhoujie.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=753"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}