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“3f103a78f5211979d50e3854bf322570b4c26831”上不存在“paddle/fluid/git@gitcode.net:s920243400/PaddleDetection.git”
未验证 提交 ca7e8879 编写于 作者: O openharmony_ci 提交者： Gitee
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!7789 Optimize js-apis-worker file content. 

Merge pull request !7789 from hyq5234/master
上级 86ec14ad 691517ec
隐藏空白更改
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Showing with 208 addition and 64 deletion
zh-cn/application-dev/reference/apis/js-apis-worker.md
浏览文件 @ ca7e8879
......@@ -7,7 +7,7 @@ Worker是与主线程并行的独立线程。创建Worker的线程称之为宿
## 导入模块
```
```js
import worker from '@ohos.worker';
```
......@@ -50,7 +50,7 @@ Worker构造函数。
| 参数名 | 类型 | 必填 | 说明 |
| --------- | ------------------------------- | ---- | ------------------------------------------------------------ |
| scriptURL | string | 是 | Worker执行脚本的url，路径规范：若DevEco Studio新建工程在pages同级下没有workers目录，需要新建workers目录，将脚本文件放入workers目录。 |
| scriptURL | string | 是 | Worker执行脚本的url。<br/>在FA和Stage模型下，DevEco Studio新建Worker工程路径分别存在以下两种情况：<br/>(a) workers目录与pages目录同级。<br/>(b) workers目录与pages目录不同级。
| options | [WorkerOptions](#workeroptions) | 否 | Worker构造的选项。 |
**返回值：**
......@@ -61,11 +61,68 @@ Worker构造函数。
**示例：**
```
```js
// worker线程创建
// FA模型-目录同级
const workerInstance = new worker.Worker("workers/worker.js", {name:"first worker"});
// FA模型-目录不同级（以workers目录放置pages目录前一级为例）
const workerInstance = new worker.Worker("../workers/worker.js", {name:"first worker"});
// Stage模型-目录同级
const workerInstance = new worker.Worker('entry/ets/workers/worker.ts');
// Stage模型-目录不同级（以workers目录放置pages目录后一级为例）
const workerInstance = new worker.Worker('entry/ets/pages/workers/worker.ts');
// scriptURL——"entry/ets/workers/worker.ts"的解释：
// entry: 为module.json5中module中name属性的值；
// ets: 表明当前使用的语言。
```
同时，需在工程目录下build-profile.json5文件的buildOption属性中添加配置信息，主要分为下面两种情况：
(1) 目录同级( **不添加也可以** )
FA模型:
```json
"buildOption": {
"sourceOption": {
"workers": [
"./src/main/ets/MainAbility/workers/worker.ts"
]
}
}
```
Stage模型:
```json
"buildOption": {
"sourceOption": {
"workers": [
"./src/main/ets/workers/worker.ts"
]
}
}
```
(2) 目录不同级( **必须添加** )
FA模型:
```json
"buildOption": {
"sourceOption": {
"workers": [
"./src/main/ets/workers/worker.ts"
]
}
}
```
Stage模型:
```json
"buildOption": {
"sourceOption": {
"workers": [
"./src/main/ets/pages/workers/worker.ts"
]
}
}
```
### postMessage
postMessage(message: Object, options?: PostMessageOptions): void
......@@ -83,12 +140,9 @@ postMessage(message: Object, options?: PostMessageOptions): void
**示例：**
```
```js
const workerInstance = new worker.Worker("workers/worker.js");
workerInstance.postMessage("hello world");
```
```
const workerInstance= new worker.Worker("workers/worker.js");
var buffer = new ArrayBuffer(8);
workerInstance.postMessage(buffer, [buffer]);
......@@ -112,8 +166,8 @@ on(type: string, listener: EventListener): void
**示例：**
```
const workerInstance = new worker.Worker("workers/worker.js")
```js
const workerInstance = new worker.Worker("workers/worker.js");
workerInstance.on("alert", (e)=>{
console.log("alert listener callback");
})
......@@ -137,7 +191,7 @@ once(type: string, listener: EventListener): void
**示例：**
```
```js
const workerInstance = new worker.Worker("workers/worker.js");
workerInstance.once("alert", (e)=>{
console.log("alert listener callback");
......@@ -162,7 +216,7 @@ off(type: string, listener?: EventListener): void
**示例：**
```
```js
const workerInstance = new worker.Worker("workers/worker.js");
workerInstance.off("alert");
```
......@@ -178,9 +232,9 @@ terminate(): void
**示例：**
```
const workerInstance = new worker.Worker("workers/worker.js")
workerInstance.terminate()
```js
const workerInstance = new worker.Worker("workers/worker.js");
workerInstance.terminate();
```
......@@ -200,10 +254,10 @@ Worker对象的onexit属性表示Worker退出时被调用的事件处理程序
**示例：**
```
const workerInstance = new worker.Worker("workers/worker.js")
```js
const workerInstance = new worker.Worker("workers/worker.js");
workerInstance.onexit = function(e) {
console.log("onexit")
console.log("onexit");
}
```
......@@ -224,10 +278,10 @@ Worker对象的onerror属性表示Worker在执行过程中发生异常被调用
**示例：**
```
const workerInstance = new worker.Worker("workers/worker.js")
```js
const workerInstance = new worker.Worker("workers/worker.js");
workerInstance.onerror = function(e) {
console.log("onerror")
console.log("onerror");
}
```
......@@ -248,10 +302,12 @@ Worker对象的onmessage属性表示宿主线程接收到来自其创建的Worke
**示例：**
```
const workerInstance = new worker.Worker("workers/worker.js")
```js
const workerInstance = new worker.Worker("workers/worker.js");
workerInstance.onmessage = function(e) {
console.log("onerror")
// e : MessageEvent<T>, 用法如下：
// let data = e.data;
console.log("onmessage");
}
```
......@@ -272,10 +328,10 @@ Worker对象的onmessageerror属性表示当Worker对象接收到一条无法被
**示例：**
```
const workerInstance = new worker.Worker("workers/worker.js")
```js
const workerInstance = new worker.Worker("workers/worker.js");
workerInstance.onmessageerror= function(e) {
console.log("onmessageerror")
console.log("onmessageerror");
}
```
......@@ -300,8 +356,8 @@ addEventListener(type: string, listener: EventListener): void
**示例：**
```
const workerInstance = new worker.Worker("workers/worker.js")
```js
const workerInstance = new worker.Worker("workers/worker.js");
workerInstance.addEventListener("alert", (e)=>{
console.log("alert listener callback");
})
......@@ -325,9 +381,9 @@ removeEventListener(type: string, callback?: EventListener): void
**示例：**
```
const workerInstance = new worker.Worker("workers/worker.js")
workerInstance.removeEventListener("alert")
```js
const workerInstance = new worker.Worker("workers/worker.js");
workerInstance.removeEventListener("alert");
```
......@@ -353,9 +409,9 @@ dispatchEvent(event: Event): boolean
**示例：**
```
const workerInstance = new worker.Worker("workers/worker.js")
workerInstance.dispatchEvent({type:"alert"})
```js
const workerInstance = new worker.Worker("workers/worker.js");
workerInstance.dispatchEvent({type:"alert"});
```
......@@ -369,9 +425,9 @@ removeAllListener(): void
**示例：**
```
const workerInstance = new worker.Worker("workers/worker.js")
workerInstance.removeAllListener({type:"alert"})
```js
const workerInstance = new worker.Worker("workers/worker.js");
workerInstance.removeAllListener();
```
......@@ -397,22 +453,23 @@ Worker向宿主线程发送消息。
**示例：**
```
```js
// main.js
import worker from '@ohos.worker';
const workerInstance = new worker.Worker("workers/worker.js")
workerInstance.postMessage("hello world")
const workerInstance = new worker.Worker("workers/worker.js");
workerInstance.postMessage("hello world");
workerInstance.onmessage = function(e) {
console.log("receive data from worker.js")
// let data = e.data;
console.log("receive data from worker.js");
}
```
```
```js
// worker.js
import worker from '@ohos.worker';
const parentPort = worker.parentPort;
parentPort.onmessage = function(e){
parentPort.postMessage("receive data from main.js")
// let data = e.data;
parentPort.postMessage("receive data from main.js");
}
```
......@@ -427,13 +484,12 @@ close(): void
**示例：**
```
```js
// main.js
import worker from '@ohos.worker';
const workerInstance = new worker.Worker("workers/worker.js")
```
const workerInstance = new worker.Worker("workers/worker.js");
```
```js
// worker.js
import worker from '@ohos.worker';
const parentPort = worker.parentPort;
......@@ -459,19 +515,18 @@ DedicatedWorkerGlobalScope的onmessage属性表示Worker线程收到来自其宿
**示例：**
```
```js
// main.js
import worker from '@ohos.worker';
const workerInstance = new worker.Worker("workers/worker.js")
workerInstance.postMessage("hello world")
```
const workerInstance = new worker.Worker("workers/worker.js");
workerInstance.postMessage("hello world");
```
```js
// worker.js
import worker from '@ohos.worker';
const parentPort = worker.parentPort;
parentPort.onmessage = function(e) {
console.log("receive main.js message")
console.log("receive main.js message");
}
```
......@@ -492,13 +547,12 @@ DedicatedWorkerGlobalScope的onmessageerror属性表示当Worker对象接收到
**示例：**
```
```js
// main.js
import worker from '@ohos.worker';
const workerInstance = new worker.Worker("workers/worker.js")
```
const workerInstance = new worker.Worker("workers/worker.js");
```
```js
// worker.js
import worker from '@ohos.worker';
const parentPort = worker.parentPort;
......@@ -556,7 +610,7 @@ parentPort.onmessageerror= function(e) {
**示例：**
```
```js
const workerInstance = new worker.Worker("workers/worker.js");
workerInstance.addEventListener("alert", (e)=>{
console.log("alert listener callback");
......@@ -620,17 +674,107 @@ WorkerGlobalScope的onerror属性表示Worker在执行过程中发生异常被
**示例：**
```
```js
// main.js
import worker from '@ohos.worker';
const workerInstance = new worker.Worker("workers/worker.js")
```
```
```js
// worker.js
import worker from '@ohos.worker';
const parentPort = worker.parentPort
parentPort.onerror = function(e){
console.log("worker.js onerror")
}
```
## 完整示例
### FA模型
```js
// main.js(同级目录为例)
import worker from '@ohos.worker';
const workerInstance = new worker.Worker("workers/worker.ts");
// 创建js和ts文件都可以
// const workerInstance = new worker.Worker("workers/worker.js");
workerInstance.postMessage("123");
workerInstance.onmessage = function(e) {
let data = e.data;
console.log("main.js onmessage");
// 接收worker线程信息后执行terminate
workerInstance.terminate();
}
// 在调用terminate后，执行onexit
workerInstance.onexit = function() {
console.log("main.js terminate");
}
```
```js
// worker.js
import worker from '@ohos.worker';
const parentPort = worker.parentPort
parentPort.onmessage = function(e) {
let data = e.data;
console.log("worker.js onmessage");
parentPort.postMessage("123")
}
parentPort.onerror= function(e) {
console.log("worker.js onerror");
}
```
build-profile.json5 配置 :
```json
"buildOption": {
"sourceOption": {
"workers": [
"./src/main/ets/MainAbility/workers/worker.ts"
]
}
}
```
### Stage模型
```js
// main.js（以不同目录为例）
import worker from '@ohos.worker';
const workerInstance = new worker.Worker("entry/ets/pages/workers/worker.ts");
// 创建js和ts文件都可以
// const workerInstance = new worker.Worker("entry/ets/pages/workers/worker.js");
workerInstance.postMessage("123");
workerInstance.onmessage = function(e) {
let data = e.data;
console.log("main.js onmessage");
// 接收worker线程信息后执行terminate
workerInstance.terminate();
}
// 在调用terminate后，执行onexit
workerInstance.onexit = function() {
console.log("main.js terminate");
}
```
```js
// worker.js
import worker from '@ohos.worker';
const parentPort = worker.parentPort
parentPort.onmessage = function(e) {
let data = e.data;
console.log("worker.js onmessage");
parentPort.postMessage("123")
}
parentPort.onerror= function(e) {
console.log("worker.js onerror");
}
```
build-profile.json5 配置:
```json
"buildOption": {
"sourceOption": {
"workers": [
"./src/main/ets/pages/workers/worker.ts"
]
}
}
```
\ No newline at end of file
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