addEventListener("error", (event) => { console.log("WebSocket 连接发生错误"); }); # 优点 实时性 可以提供实时的双向通信,无需客户端不断地向服务器发送请求,服务器也可以主动推送数据给客户端,从而实现实时的数据交换 低延迟 由于WebSocket 建立的是长连接,减少了连接建立和断开的开销,从而降低了通信...
WinJS.Application.addEventListener(type, listener, capture); Parameters type Type:string The type (name) of the event. You can use any of the following:"activated", "checkpoint", "error", "loaded", "ready", "settings", and" unload". ...
{ "compilerOptions": { "checkJs": true, "noImplicitReturns": true, "noUnusedLocals": true, "noUnusedParameters": true, "noUncheckedIndexedAccess": true }}1.2.3.4.5.6.7.8.9.在撰写本文时，Deno 不会自动检测 deno.json 文件，因此必须通过 --config 标志指定它。然后，...
//attach a click listener to a play button document.querySelector("button")?.addEventListener("click", async () => { await Tone.start(); console.log("audio is ready"); }); Scheduling Transport Tone.getTransport() returns the main timekeeper. Unlike the AudioContext clock, it can be st...
loginButton.addEventListener('click', function () { authContext.login(); }); logoutButton.addEventListener('click', function () { authContext.logOut(); }); tokenButton.addEventListener('click', () => { authContext.acquireToken( "https://graph.microsoft.com", function (errorDesc, token, ...
elem.addEventListener('build', function (e) { ... }, false); // 触发事件. elem.dispatchEvent(event); 复制代码 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. CustomEvent 可以创建一个更高度自定义事件,还可以附带一些数据,具体用法如下: ...
We recommend avoiding inline event handlers in favor of approaches that assign handlers in JavaScript withaddEventListener, as the following example demonstrates: AlertUser.razor.js: JavaScript exportfunctionalertUser(){ alert('The button was selected!'); }exportfunctionaddHandlers(){constbtn =document...
material parameters. * @param {} materialParams* @param {string} mapName * @param {Object} mapDef * @return {Promise} */ GLTFParser.prototype.assignTexture= function (materialParams, mapName, mapDef) { var parser = this; return this.getDependency('texture', mapDef.index.then(...
function handleDragOver(e) { e.stopPropagation(); e.preventDefault(); e.dataTransfer.dropEffect = 'copy'; // Explicitly show this is a copy. } container.get(0).addEventListener('dragover', handleDragOver, false); container.get(0).addEventListener('drop', handleFileSelect, false); ...
document.addEventListener('keydown', onKeyDown, false); document.addEventListener('keyup', onKeyUp, false); 最后,对于键盘输入,我们将记录按下这些键时要执行的操作: // Can be viewed here function onKeyDown(event: KeyboardEvent) { console.log('keypress'); ...