functiongetElementPagePosition(element){ //计算x坐标 varactualLeft = element.offsetLeft; varcurrent = element.offsetParent; while(current !==null){ actualLeft += current.offsetLeft; current = current.offsetParent; } //计算y坐标 varactualTop = element.offsetTop; varcurrent = element.offsetParent;...
var pos=getElementPos("divId"); alert("距左边距离"+pos.x+",距上边距离"+pos.y); js获取对象的绝对坐标 view plaincopy to clipboardprint?function getAbsPoint(e) { var x=e.offsetLeft, y=e.offsetTop; while(e=e.offsetParent) { x+=e.offsetLeft; y+=e.offsetTop; } alert("x:"+x+"...
offsetTop和offsetLeft属性返回元素相对于其最近的已定位(position属性非static)祖先元素的顶部和左侧的距离。 优势: 可以获取元素相对于特定祖先元素的位置。 示例代码: 代码语言:txt 复制 const element = document.getElementById('myElement'); let offsetTop = 0; let offsetLeft = 0; while (element) { off...
...javascript需要掌握的常见方法有:1、getElementById:是指根据指定的 id 属性获取指定的元素。...示例:var phone= document.getElementById("phone");2、getElementsByClassName:是指通过元素的class属性获取指定元素集合。...示例:var x = document.getElementsByClassName("example");3、getElementsByTagName:通过...
oTop += oParent.offsetTop // Add parent top position o = oParent } return oTop } //获取控件宽度 function getElementWidth(objectId) { x = document.getElementById(objectId); return x.offsetWidth; } 范例演示: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www...
position: absolute; top: 0; left: 360px; border: 1px solid #cccccc; overflow: hidden; display: none; } image.png var boxObjc = document.getElementById("box") var smallObjc = boxObjc.children[0]; var bigObjc = boxObjc.children[1]; var bigImgObjc =...
sunpos - Sun position, elevation, azimuth, ecliptic/equatorial coordinates and sunrise/sunset time (Julian day) calculation and conversion utilities. Web site is programmed using pure JS, Vuejs and i18n Vuejs localization plugin. Visualization is created using D3.js. U3xyz - A personal blog ba...
Removed Matrix4's translate(), rotateX(), rotateY(), rotateZ(), rotateByAxis() and crossVector(). Removed setClearColorHex() from CanvasRenderer and WebGLRenderer. Use setClearColor() instead. Renamed Matrix4's extractPosition() to copyPosition(). Renamed Matrix4's setRotationFrom*() to...
new AMap.Pixel(x: number, y: number) 参数说明: x (number) y (number) 成员函数: getX() 获取像素横坐标 返回值: Number: getY() 获取像素纵坐标 返回值: Number: toString() 以字符串形式返回像素坐标对象 返回值: string: equals(point) 当前像素坐标与传入像素坐标是否相等 参数说明: point...
最后通过调用接口beginPath、moveTo、lineTo、stroke在canvas组件上绘制出对应笔迹。为了方便笔迹撤回及笔迹同步,需要记录所有坐标点的isFirstPosition 、positionX 、positionY 值。此功能在index.js中实现,代码如下: // 初始化Path2D对象onShow(){constel=this.$refs.canvas;this.ctx=el.getContext('2d');this....