How to add function to custom dialog

Questions
1 
function closeDialog() {
            console.log('closeDialog');
            $f7.dialog.close()
        }
const search = ()=>{
        const html = <i class="icon f7-icons multiply-icon" onClick="${closeDialog}">multiply_square_fill</i>
            $f7.dialog.create({
            content: html,
            }).open();
        }

I add function as above but it doesn’t work!
please support me!

I use framework7 core javascript version 8