Sample for invoking js function in kotlin with params

[yushaye]

This project is very helpful, but I have no idea about invoking js function in kotlin with params, can you add a sample for that.

[Greatwallcorner]

I need that too， @dokar3， Could you help us.

[stephanepechard]

@yushaye @Greatwallcorner Does this part help you?

[Greatwallcorner]

@yushaye @Greatwallcorner Does this part help you?

this example is define function in kotlin and invoke it in evaluate function, it couldn't provide some params , unless do some conversions youself(like kotlin array to json str?). the lib can't invoke a js function from kotlin with params

[stephanepechard]

@Greatwallcorner With the function method, you can have params in JS that you retrieve in Kotlin callback. What API would you like it to be?

[Greatwallcorner]

@Greatwallcorner With the function method, you can have params in JS that you retrieve in Kotlin callback. What API would you like it to be?

i didn't understand actually, could you give a example? This is my scene, first load js file via evaluate function, then i should able to invoke the function defined in that js file loaded before, and then i want to pass params from kotlin(these params may be param of kotlin function) to invoke js function. thanks for you reply.

[stephanepechard]

@Greatwallcorner If you put a function in the JS context through evaluate, you then have to use it again with the same context to get the result. But I do it simply on with only one evaluate call, like:

function evaluate(params) {
    // do something with params
}
evaluate(myParamsObject);

Then in Kotlin, I do:

val result = quickJs {
    define("myParamsObject") {
        property("param1") {
            getter {
                "This is my first param."
            }
        }
        property("param2") {
            getter {
                123
            }
        }
    }
    evaluate<OutputType>(script)
}

and if you need dynamic data in getters, you can use an callback to fetch them back in Kotlin.