我尝试过d3.select(elem).node()给出了整个节点,而不仅仅是元素。我还检查了(在v5中)是否有一个_groups,并且我可能从那里导出元素。但有没有更直接的方法?var g = d3.select('g');
// I want to find out hereif the element (selection) passed
// is "svg&
local/lib/node_modules/protractor/node_modules/jasminewd2/index.js:112:25
at new ManagedPromise(/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/p
local/lib/node_modules/protractor/node_modules/jasminewd2/index.js:112:25
at new ManagedPromise(/usr/local/lib/node_modules/protractor/node_modules/selenium-webdriver/lib/p