Javascript // 我们DOM 元素的引用 let controlCheckbox = document.getElementById("mainCheckbox"), addBtn = document.getElementById("addNewObserver" ), container = document.getElementById("observersContainer" ); // 具体的被观察者 //Subject 类扩展controlCheckbox 类 extend(new Subject(), controlC...
var newNode=xmlDoc.createElement("New Element Name");//创建元素节点 var nodeBook =xmlDoc.getElementsByTagName("book")[0];//找到节点book nodeBook.appendChild(newNode);//把newNode作为子节点追加到父节点book的子节点后面。也就是说,要追加节点,必须先找到父节点。 另外,还可以通过克隆的方式添加节点。
// HTML 代码为 window.myFrame // [HTMLIFrameElement]frames.myframe === myFrame // truename属性的值会自动成为子窗口的名称,可以用在window.open方法的第二个参数,或者和标签的target属性 参考文章(侵删)
getElementById("api").addEventListener("click", api, false); document.getElementById("logout").addEventListener("click", logout, false); //UserManager from the oidc-client to manage the OpenID Connect protocol var config = { authority: "http://localhost:5001", client_id: "js", redirect...
0,pointerId:!0,pointerType:!0,screenX:!0,screenY:!0,targetTouches:!0,toElement:!0,touches:!0,which:function(e){var t=e.button;return null==e.which&&be.test(e.type)?null!=e.charCode?e.charCode:e.keyCode:!e.which&&void 0!==t&&we.test(e.type)?1&t?1:2&t?3:4&t?2:0:e...
var iframe = document.getElementById('iframe'); iframe.onload = function() { var data = { name: 'aym' }; // 向domain2传送跨域数据 iframe.contentWindow.postMessage(JSON.stringify(data), 'http://'); // 接受domain2返回数据 window.addEventListener('message', function(e) { alert('data...
To access an HTML element, use thedocument.getElementById(id)method. Then use theinnerTextproperty to change the inner text of the HTML element: Example <!DOCTYPE html> My First Web Page My First Paragraph <pid="demo"> document.getElementById...
Below are some examples of how you can use the document object to access and manipulate HTML. Finding HTML Elements MethodDescription document.getElementById(id)Find an element by element id document.getElementsByTagName(name)Find elements by tag name ...
window.scrollBy(0,window.innerHeight) 上面代码用于将网页向下滚动一屏。 如果不是要滚动整个文档,而是要滚动某个元素,可以使用下面三个属性和方法。 Element.scrollTop Element.scrollLeft Element.scrollIntoView() 3.6、window.print() window.print方法会跳出打印对...
// HTML代码为 // Please select an image // // // document.getElementById("image").onchange = function() { var file = document.getElementById("image").files[0] if (!file) return sign_request(file, function(response) { upload(file, response.signed_request, response.url, function...