How to use javascript code behind for blazor component

I'm trying to use JavaScript code behind in blazor here is my solution files in rider

and inside TestComponent.razor.js there is code by default, I don't know what is this (is this necessary ?)

    export class TestComponent {    }    window.TestComponent = TestComponent;

and this is my js code trying to put into TestComponent.razor.js file

example: we have two function and 1 line JS code without putting into any function , so how to put these js code into TestComponent.razor.js and how to use them

    console.log("no function code");    function MyLogFunction1(){        console.log("function1")    }    function MyLogFunction2(){        console.log("function2")    }