在编程中,当你看到错误信息“argument of type string is not assignable to parameter of type”时,这通常意味着你试图将一个字符串类型的参数传递给一个期望不同类型参数的函数或方法。以下是针对这个问题的详细解答: 1. 错误含义 这个错误表明类型不匹配。你传递的参数类型(在这个例子中是string)与函数或方法期...
Argument of type 'string | null' is not assignable to parameter of type 'string'. 代码: JSON.parse(sessionStorage.getItem("user") ).userId; 原因: sessionStorage.getItem("user") 方法可能返回null , 而null 不是字符串 ,则JSON.parse在执行时就会出错,...
function assertNever(x: never): never { throw new Error("Unexpected object: " + x); } function processValue(value: string | number) { switch (typeof value) { case "string": // 处理字符串 break; case "number": // 处理数字 break; default: assertNever...
BC30002: Type 'MySqlCommand' is not defined. BC30311: Value of type 'String' cannot be converted to 'System.Web.UI.WebControls.Label'. BC39456: 'Settings' is not a member of 'My' Error Best FREE Rich Text Editor? Best method to send data from code-behind to javascript and return a...
property filter does not exit on type 1093 6 5 ValidateForm emitter.on emitter.off 报错 1288 0 6 老师。我把那个scroll的组件用ts改了下,这个报错是啥意思,把我类型换成any也不行 456 0 6 老师这里似乎有个口误 1826 0 1 token报红 581 0 5 ...
nodeper3楼•5 个月前
问参数类型'Image‘不能赋值给参数类型’String‘。.dartargument_ type _not_assignableEN现在，它可以正常工作，没有任何错误：#
Describe the bug I assume this is a known bug, but thought I would report it just in case. Having trouble in the beta v2 and 3, where QueryKey can not be of type string. Argument of type 'string' is not assignable to parameter of type 'Q...
Hi there! I have bug with types when i'm try to use $dayjs inside of vuex mutations (example in photo below). when i'm assign value directly, without using of $dayjs module, error dissapears. my tsconfig.json file includes: { "compilerOp...
doubleyong 编辑于 2023年09月18日 22:30 收录于文集 前端· 56篇 报错: Argument of type 'string | null' is not assignable to parameter of type 'string'. 代码: JSON.parse(sessionStorage.getItem("user") ).userId; 原因: sessionStorage.getItem("user") 方法可能返回null , 而null 不是字符串 ...