Add getElementsByClassName function to legacy.ts

[censujiang]

No description provided.

[fb55]

Hi @censujiang, thanks for the contribution! Could you add a simple test case to the legacy spec?

[lookus69]

will it be possible with this function get elements with multiple classes? using getElement() with options = {'class': 'className'} doesnt work fine now if the element has more than one class

[fb55]

will it be possible with this function get elements with multiple classes? using getElement() with options = {'class': 'className'} doesnt work fine now if the element has more than one class

The easiest way to do this would be to use css-select, or to supply a custom function that checks if there is match for the class.

[fb55]

Thanks @censujiang!

[coveralls]

coverage: 97.995% (+0.04%) from 97.956%
when pulling 1cc12f1 on censujiang:master
into 4bd7786 on fb55:master.