functiongetBase64ImageSize(base64) { letstr =atob(base64.split(',')[1]); letbytes = str.length; returnbytes; } 如果要获得KB的就除以1024 functiongetBase64ImageSizeInKB(base64) { letbytes =getBase64ImageSize(base64); letsizeInKB = bytes /1024; returnsizeInKB; } 此函数首先使用atob()...
固有长宽比:1:1 文件大小:27.0 kB 当前来源:https://i.stack.imgur.com/deTzi.jpg?s=256&g=1 https://stackoverflow.com/users/5934465/xgqfrms?tab=reputation See the Pen How to get the original size of an image using JavaScript by xgqfrms (@xgqfrms) on CodePen. refs https://stackoverflow...
Read this tutorial and learn the two methods of getting the width and height of the image. Learn about the properties that help to get the image size.
clientHeight; alert("Current width=" + currWidth + ", " + "Original height=" + currHeight); } Get Current Image Size Related FAQHere are some more FAQ related to this topic:How to get original image size in JavaScript How to increase and decrease image size using JavaScript How ...
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varimg=document.getElementById('image');varctx=document.getElementById('canvas').getContext('2d');ctx.drawImage(img,0,0);varrgba=ctx.getImageData(0,0,480,360).data;// the size of the image is 480x360 (width x height) 下面,我们编写一个辅助函数,将输入的RGBA数组转换为灰度: ...
A function to get a cookie value A function to check a cookie value A Function to Set a Cookie First, we create afunctionthat stores the name of the visitor in a cookie variable: Example functionsetCookie(cname, cvalue, exdays) {
What is a Lazy Loading Image? Lazy Loading images is a technique to load images on a web page only when required. This way can improve the page’s loading time without reducing the page size. Users can only view its first fold and associated images when they open a website. The images...
javascript 未捕获DOM异常：无法对"画布渲染上下文2D"执行"getImageData"如果您在画布上绘制从单独来源检索...
May 18, 2023 —Leaflet 1.9.4has been released! Leaflet is the leading open-source JavaScript library for mobile-friendly interactive maps. Weighing just about42 KB of JS, it has all the mappingfeaturesmost developers ever need. Leaflet is designed withsimplicity,performanceandusabilityin mind. It...