checkbox binding in jade

I am trying to create a simple node-express-jade app with CRUD ops on books data maintained in a javascript array. I need to provide an option to select multiple books and then delete.

For this I have provided a checkbox against each book and binded it to book.IsSelected property. However this binding isn't working. here is example:

input(type='checkbox', name='isselected', value="#{book.IsSelected}")

then on delete button click

a(href='/books/delete-multiple')

I have a route that takes the request

router.get('/delete-multiple', function(req, res){

  api.deleteMultipleBooks(error=>{
    if(error){
      console.log(error);
    }else{
      res.redirect('/books');
    }
  })
})

in api.js:

deleteMultipleBooks: function(callback){
       _.remove(books, { IsSelected: true });

        callback(null);
    }