1、html中webWorker
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<p>時間： <output id="result"></output></p>
<button onclick="startWorker()">開始工作</button>
<button onclick="stopWorker()">停止工作</button>
<p><strong>注意：</strong> Internet Explorer 9 及更早 IE 版本瀏覽器不支持 Web Workers.</p>
<script>
let wk;
function startWorker() {
if(typeof(Worker) !== "undefined") {
if(typeof(wk) == "undefined") {
wk = new Worker("./static/clock-Worker.js");
}
wk.onmessage = function(event) {
document.getElementById("result").innerHTML = event.data;
};
} else {
document.getElementById("result").innerHTML = "抱歉，你的瀏覽器不支持 Web Workers...";
}
}
function stopWorker()
{
wk.terminate();
wk = undefined;
}
</script>
</body>
</html>
clock-Worker.js
/// <reference lib="webworker" />
;(function () {
const WEEK = {
1: '週二',
2: '週二',
3: '週三',
4: '週四',
5: '週五',
6: '週六',
0: '週日',
};
// 返回月
function getMonth(date) {
const month = date.getMonth() + 1; // getMonth()得到的月份是0-11
return setTimeFillZero(month);
}
// 返回天
function getDay(date) {
const day = date.getDate();
return setTimeFillZero(day);
}
// 返回小時
function getHours(date) {
const hours = date.getHours();
return setTimeFillZero(hours);
}
// 返回分
function getMinutes(date) {
const minute = date.getMinutes();
return setTimeFillZero(minute);
}
// 返回秒
function getSeconds(date) {
const second = date.getSeconds();
return setTimeFillZero(second);
}
// 返回拼接的日期
const _getDate = ()=> {
const _date = new Date();
const year = _date.getFullYear();
const month = getMonth(_date);
const day = getDay(_date);
const hours = getHours(_date);
const minutes = getMinutes(_date);
const seconds = getSeconds(_date);
const week = WEEK[_date.getDay()];
return week + ' ' + year + '-' + month + '-' + day + ' ' + hours + '-' + minutes + '-' + seconds;
};
/**
* 數據填充
* @param num 01 10 等格式化數據
* @returns {string}
*/
function setTimeFillZero(num) {
return num < 10 ? '0' + num : num;
}
/**
*
* 設置時間
*/
function getTime() {
const time = _getDate();
postMessage(time);
setTimeout(getTime, 1000);
}
getTime();
})();
2、angular中使用webWorker
目前使用的是angular6，我是升級到angular8版本，具體請參考https://update.angular.io/#6.0:8.0
根目錄下創建 tsconfig.worker.json
{
"extends": "./tsconfig.json",
"compilerOptions": {
"outDir": "./out-tsc/worker",
"lib": [
"es6",
"webworker"
],
"types": []
},
"include": [
"src/**/*.worker.ts"
]
}
tsconfig.app.json中exclude增加"**/*.worker.ts" 注意文件目錄
在angular.json中 architect =》build =》options 增加 "webWorkerTsConfig": "tsconfig.worker.json",
在angularjson中 lint =》options =》tsConfig 增加"tsconfig.worker.json"
private setTime() {
/// <reference lib="webworker" />
if (typeof Worker !== 'undefined') {
// @ts-ignore
this.interval = new Worker('./dynamic-clock.worker', { type: 'module' });
this.interval.onmessage = ({ data }) => {
this.time = data;
};
// worker.postMessage('hello');
}else {
const _week = this._getWeek();
this.interval = setInterval(() => {
this.time = _week + ' ' + AppUtil.timestampToTime(new Date(), 'yyyy-MM-dd HH:mm:ss');
}, 1000);
}
}
dynamic-clock.worker.ts和clock-Worker.js一樣