Column in jsstore is an object where column name is key & column options are values.

var columns = {
    [column name]: {} 
}

Let's see an example -

var columns = {
    Id:{ primaryKey: true, autoIncrement: true },
    ItemName:  { notNull: true, dataType: "string" },
    Price:  { notNull: true, dataType: "number" },
    Quantity : { notNull: true, dataType: "number" }
}

👉 Column has following options -

• primaryKey: boolean, // declare this column as primary key (optional)

• notNull: boolean, // ensure this column value should not be null (optional)

• dataType: JsStore.DATA_TYPE, // datatype of this column (optional)

For more info about data type, see this link - DataType

• autoIncrement: boolean, // automatically increment value (optional)

• unique: boolean // This column will have unique value (optional)

• default: any, // Provides a default value for a column when none is specified (optional)

• multiEntry: boolean, // Provides support to search inside array values (optional)

• enableSearch: boolean - default value is true // Turn on/off search for this column (optional)

• keyPath : string[] - allows you to use multiple indexing // optional