Call a javascript function on button click in jquery mobile application

can anyone tell me how to call a javascript function on butt开发者_如何学编程on click in jquery mobile application . I am using jquery mobile in my mvc application. I want to call a jquery function on focus of a textbox. I can not make the call in the traditional way

Please help

Did you try,

$("#inputboxid").focus(function(){

});

// this is a tranditional way in jquery :)