How do you call a JavaScript function from .NET using JavaScript Interop?
In Blazor, IJSRuntime interface is used to invoke a JavaScript function from .NET. Using the InvokeAsync<T> method of IJSRuntime abstraction, we can call the JavaScript function. This method takes the function name and function parameters as the argument. The JavaScript function should always be written in the index.html file. Open the wwwroot/index.html file and put in the following code. Open JSInterop.cshtmland put in the following code. The method CallJSMethod will call JS function JSMethod by using the JSRuntime.InvokeAsync method. Important notes Do not write your JS code in the .cshtml file. This is not allowed in Blazor and the compiler will throw an error. Always put your JS code in the wwwroot/index.html file. Always add your custom <script> tag after “<script src=”_framework/blazor.webassembly.js”> </script>” in the <body> section of the index.html file. This is to ensure that your custom script will execute after loading the “blazor.webassembly.js” script. Reference link https://www.freecodecamp.org/news/how-to-implement-javascript-interop-in-blazor-9f91d263ec51/
Does ASP.NET Core Blazor work in the Internet Explorer (IE) browser?
WebAssembly is not supported in the IE browser, so client-side Blazor is not supported in IE. But server-side Blazor can be used instead in IE 11 with polyfills. For more information on browser compatibility, check this link.
Will Blazor be unsupported on outdated browsers that lack WebAssembly support?
Yes, Blazor client-side applications will not be supported on outdated browsers that lack WebAssembly support.
Is there a way to access DOM in Blazor?
Currently, Blazor doesn’t provide any direct way to access the browser’s DOM or APIs. But there is an option to invoke/call JavaScript functions via JS Interop, thereby letting Blazor access the DOM and its APIs. In the below example we have accessed the button’s DOM element in the script by using javascript interop.
Is it possible in Blazor to open a URL in new tab programmatically?
We can make use of JS Interop to open a URL in new tab.