const canvas1 = document.querySelector("#animation-container1"); const ctx1 = canvas1.getContext("2d"); 明明检查过了,确实有id为animation-container1的元素存在,却会报错Cannot read properties of null (reading 'getContext'),即试图在一个空值(null)上使用getContext方法。 困扰许久,后来觉得可能是在...
Hi, I'm getting console errors "Cannot read properties of null (reading 'getContext')" and I'm not sure how to correct. My code is below. Thanks! dev: https://dev-adi-cpm.pantheonsite.io/payers/ // wait until DOM is ready $( document ).ready(function() {
Cannot read properties of null (reading 'getContext') Ask Question Asked3 years ago Modified3 years ago Viewed1k times -1 I get this error message: Why? letcanvas =document.getElementById("gameSecreen");letctx = canvas.getContext("2d"); ctx.fillRect(20,20,100,100); ...
[canvas]ncaught TypeError: Cannot read properties of null (reading 'getContext') 相信你和我一样是直接复制大佬的js代码(笑) ——— 主要问题在于:js先加载完了,html才加载,导致js获取不了html的对象 解决办法: 👇 把 里的 扔到 下面
1. 错误提示 代码语言:javascript 复制 Uncaught TypeError:Cannot read propertiesofnull(reading 2. 错误截图 在这里插入图片描述 3. 错误分析 创建canvas 的绘图上下文 CanvasContext 对象时canvas还未加载完成; Taro.createCanvasContext 所放生命周期错误!
Consumers of your bundle will have to use chunk['default'] to access their default export, which may not be what you want. Use `output.exports: 'named'` to disable this warning [!] TypeError: Cannot read properties of null (reading 'getVariableForExportName') ...
errors.ts:19 Uncaught Error: Cannot read properties of null (reading 'getText') TypeError: Cannot read properties of null (reading 'getText') at Object.t.findDocumentLinks (htmlWorker.js:7:183574) at e.<anonymous> (htmlWorker.js:7:459701) at htmlWorker.js:7:84096 at Object.next (htmlWo...
There is one my question, that i try to solve.Cannot read properties of null (reading 'transition'). What does it mean?. I checked option with integration mychart.update() from this questionhttps://github.com/chartjs/Chart.js/issues/5149. But when I tried start appears other erro...
const existingParallelRoutes = newCache.parallelRoutes.get(key) Error:Cannot read properties of null (reading 'get') Provide environment information const nextConfig = { output:"standalone", reactStrictMode: true, poweredByHeader: false, skipTrailingSlashRedirect: true, ...