exportdefaultclass myUtils {//计算元素滚动条宽度(默认clientWidth包括滚动条的情况)static getScrollWidth(elemOrSelect) {if(!elemOrSelect)return;if(elemOrSelect.constructor === String) elemOrSelect =document.querySelector(elemOrSelect);//参数为html或body时if(/BODY|HTML/.test(elemOrSelect.nodeName)...
left: 元素左边缘距离视口左边的距离。 width: 元素的宽度(等同于right - left)。 height: 元素的高度(等同于bottom - top)。 需要注意的是,getBoundingClientRect()返回的位置是相对于当前视口(viewport)的,而不是整个文档。也就是说,如果你滚动页面,这些值会发生变化。 getClientRects() getClientRects()方法返回...
代码如下: 代码语言:javascript 复制 <!DOCTYPEhtml>图片转Base64转换成base64形式转换成base64形式functionimgToBase64(){varsrc=document
AJAX GET请求 #result { border: 1px solid pink; width: 200px; height: 200px; } 点击发送请求 //获取dom元素 const btn = document.getElementsByTagName('button')[0]; var result = document.getElementById('result'); //绑定事件 btn.onclick = function() { //1.创建对象 const ...
DOCTYPE html> 登录 <!-- action 提交的地址 --> <!-- input的name属性必须定义,只有有name属性的input,它的值才会被form提交到服务器 --> 用户名: 密码: js
window.screen.height;window.screen.width; viewport size / device size / document size https://ryanve.com/lab/dimensions/ responsive viewport / viewbox svg viewbox small screen constsvgStr =` <svg data-uuid="live_map_svg" id="live_map_svg" width="100%" height="100%" viewBox="0 0 10...
<!DOCTYPE html> Browser width Getting width in HTML page var w = window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth; var h = window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight; var x = document.getElementById(...
The viewport that covers the result represented by the top-left and bottom-right coordinates of the viewport. BoundingBoxCompassNotation The bounding box of the location. Brand The brand associated with the POI Classification The classification for the POI being returned ClassificationName Name ...
<!DOCTYPE html> Temperature converter Temperature converter Go to http://localhost:8080 to view your app:The app runs in the browser for now, and can't be installed. To make the app installable, the app needs a web app manifest.Step 3 - Create a web app manifestA web ...
代码语言:javascript 复制 importrequestsimporttime url="https://www.cnblogs.com/yoyoketang/"start_time=time.time()foriinrange(10):r=requests.get(url)print(r)print('总耗时:',time.time()-start_time) 我们想实现并发请求需用到 异步http 库 aiohttp。