I make inherit from XML view it's name 

stock_move_line_product_selector

and I make override the confirm button with new button and I add class name select_pro_btn 

and I try this code with JS to make a special code for this button 

 

odoo.define('my_module.custom_save_button', function (require) {
    "use strict";

    var BasicController = require('web.BasicController');
    var FormController = require('web.FormController');
    var core = require('web.core');

    FormController.include({
         renderButtons: function ($node) {
             this.$buttons.on('click', '.select_pro_btn', this._onSave.bind(this));
         },
         _onSave: function () {
            console.log('_onSave');
         },
    });
});

but it not working 
can any one help me