{{ target: common-data-option-desc }}

More likely, we need to assign name to each data item, in which case each item should be an object:

[{
    // name of date item
    name: 'data1',
    // value of date item is 8
    value: [12, 14, 10]
}, {
    name: 'data2',
    value: 20
}]

Each data item can be further customized:

[{
    name: 'data1',
    value: [12, 14, 10]
}, {
    // name of data item
    name: 'data2',
    value : [34, 50, 15],
    // user-defined special itemStyle that only useful for this data item
    itemStyle:{}
}]