" - " symbol is used to select result between two values. The values should be numbers only.

Sql (Where)

Select * From Table_Name;
Where
Column_Name Between value1 and value2

JsStore

connection.select({
    from: "Table_Name",
    where: {
        Column_Name: {
            '-': {
                Low: value1
                High: value2
            }
        },
    }
}).then(function(results) {
    //results will be array of objects.
    console.log(results);
}).catch(function(error) {
     console.log(error);
});

Example