generating javascript alert in selenium using JavascriptExecutor

Question

Things tried

String selectBook="abc"; 
String script="alert('"+selectBook+"' book does not exist');"; 
JavascriptExecutor js=(JavascriptExecutor)driver;
js.executeScript(script);    

I want to alert the value of variable select book in alert along with the message.

Answer 1

The single quotes are closed incorrectly

String script="alert('"+selectBook+" book does not exist');"; 

Hope this helps you...