我正在开发一个 Blazor 服务器项目,并且在我的组件中有这个按钮
<button type="button" class="btn btn-primary" @onclick="@GetUserInput">Add Name</button>
这是我拥有的点击事件正在调用的代码
protected async void GetUserInput()
{
var result = await JsRuntime.InvokeAsync<string>("getName");
}
function getName() {
var retVal = prompt("Enter Name : ", "name here");
return retval;
}
在 javascript 函数中,retVal 有一个值,但在 GetUserInput 方法中,代码崩溃并显示以下错误消息
ReferenceError: retval is not defined
at getActivityName (https://localhost:44318/script.js:15:11)
at https://localhost:44318/_framework/blazor.server.js:1:70045
at new Promise (<anonymous>)
at e.beginInvokeJSFromDotNet (https://localhost:44318/_framework/blazor.server.js:1:70011)
at https://localhost:44318/_framework/blazor.server.js:1:26293
at Array.forEach (<anonymous>)
at e.invokeClientMethod (https://localhost:44318/_framework/blazor.server.js:1:26263)
at e.processIncomingData (https://localhost:44318/_framework/blazor.server.js:1:24201)
at e.connection.onreceive (https://localhost:44318/_framework/blazor.server.js:1:17286)
at WebSocket.i.onmessage (https://localhost:44318/_framework/blazor.server.js:1:46503)'
我不确定发生了什么?有任何想法吗?