angularjs - Protractor : Find Element by ID with spaces -

i've got button following id

<button id="emp btn"....

i'm unable access because of space

i've tried following , don't work

element(by.id("emp btn"));  element(by.id("emp%20btn"));  element(by.id("emp%btn"));  element(by.id('emp btn'));

its bad idea use spaces in id. html 5 says, id must contain @ least 1 character , must not contain space characters.

but you still can find such element using xpath. try use this:

.\\button[contains(@id,'firstpart') , contains(@id,'secondpart')]

Braziel