拖拉事件都继承了DragEvent接口,这个接口又继承了MouseEvent接口和Event接口。 浏览器原生提供一个DragEvent()构造函数,用来生成拖拉事件的实例对象。 new DragEvent(type, options) 1. DragEvent()构造函数接受两个参数,第一个参数是字符串,表示事件的类型,该参数必须;第二个参数是事件的配置对象,用来设置事件的属性...
3) 自定义放置目标:重写dragenter、dragover 4) dataTransfer(在拖放操作时实现数据交换): (1) 两个方法: getData(【text/URL】、【value】)和 setData(【text/URL】)::【HTML5 也支持"text"和"URL",但这两种类型会被映射为"text/plain"和"text/uri-list",,,event.dataTransfer.setData()】 (2) dataTra...
dragged = event.target; // 被拖拉节点的背景色变透明 event.target.style.opacity = .5; },false); document.addEventListener("dragend",function( event ) { // 被拖拉节点的背景色恢复正常 event.target.style.opacity =""; },false); document.addEventListener("dragover",function( event ) { // ...
target: string | number- the id of a potential target item events: MouseEvent- a native HTML event object Example dataview.events.on("DragOut",function(data,events){ // your logic here }); Related sample:Dataview. Events Change log: added in v7.0...
DragEvent()构造函数接受两个参数,第一个参数是字符串,表示事件的类型,该参数必须;第二个参数是事件的配置对象,用来设置事件的属性,该参数可选。配置对象除了接受MouseEvent接口和Event接口的配置属性,还可以设置dataTransfer属性要么是null,要么是一个DataTransfer接口的实例。
In the sections below, we go over the following methods in detail: setData(), getData() and clearData(). Let's get into the discussion. Setting drag data The setData() method of the dataTransfer object (which is a property of a drag event's object) serves to set data of a given for...
// __USAGE Example__varuploadFileInput=document.createElement('input');uploadFileInput.type='file';uploadFileInput.id='uploadFileInput';document.body.appendChild(uploadFileInput); functionreadFileAsDataURL(file){returnnewPromise((resolve,reject) =>{let...
(click event): <!doctype html> example of using event object click me! var button = document.getelementbyid("mybutton"); button.addeventlistener("click", function(event) { // accessing event properties console.log("type of event: " + event.type); console.log("target element:...
afterOnCellMouseOver Source code afterOnCellMouseOver(event, coords, TD) Fired after hovering a cell or row/column header with the mouse cursor. In case the row/column header was hovered, the index is negative. For example, hovering over the row header of cell (0, 0) results with afte...
To restate it: handling the dragover event on an element, and then cancelling its default action, turns the element into a dropzone, i.e. it could accept drops of draggable items. Going back with our last example, let's now add a new HTML element to act as the dropzone. We'll use...