错误信息:"objects are not valid as a React child (found: [object Error]). If you meant to render a collection of children, use an array instead." 的含义是,React尝试渲染一个对象,但这个对象不是有效的React子元素。具体来说,React在这里遇到的是一个Error对象,而不是一个可渲染的组件、字符串、...
Uncaught Error: Objects are not valid as a React child (found: object with keys {content, key, duration}). If you meant to render a collection of children, use an array instead. 意思是:未捕获错误:对象作为React子对象无效(找到:具有键{content,key,duration}的对象)。如果要呈现子对象集合,请改...
react 报 Uncaught Error: Objects are not valid as a React child , If you meant to render a collection of children, use an array instead. 的一种解决方法 如图, 出现这种Uncaught Error: Objects are not valid as a React child 通过 注释 组件来进行 排查 ,最后 定位 到 这段 原来是为了偷懒 ,...
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Now, here is an example of how to use theuseMaphook with an array that is not of objects: // DatatypeData=stringinterfaceMyComponentProps{color:"red"children:string}constdata:Data[]=['Item 1','Item 2']// To get the string Item is through "children"constMyComponent=({children,color}...
在组件的第一次呈现时,this.state.systemObjects是undefined。因此,如果在渲染结束时有console.log(jsonPackage.replaceAll("\\\", "\\"));行,它将失败,因为它无法对undefined执行操作。但是,注释掉后,它运行良好,因为它会遍历if子句的if(typeof jsonPackage === 'undefined'){部分,而不是else子句,在jsonPacka...
An array of objects describing elements that D3 will append or update. For example: ``` js const data = [ { append: 'circle', r: 50, cx: 50, cy: 50, fill: 'purple', }, { append: 'rect', width: 100, height: 100, x: 100, y: 0, fill: 'blue', }, ]; render('#root...
Type:array Origin name requested. List all assets required for the requested origin. assets Type:arrayof objects Lists all application assets generate by Webpack, group by file type, containing anarray of objectswith the following format:
React class组件中的render函数this指向问题? this 的指向不符合你的预期和 React 没有关系。this 的指向是根据调用者决定的,你定义的 handleClick 作为事件回调绑定到 dom 元素上了,this 指向肯定不是当前的实例啦,所以改用箭头函数就好啦 Render方法(React中的Render'async'函数返回值) Issue React组件和生命周期...
报错:react.development.js:1130 Uncaught Error: Objects are not valid as a React child (found: [object Promise]). If you meant to render a collection of children, use an array instead. 原因:是因为getControl 我用了异步async 的方法。而调用的时候,没有加上await导致的。