lder=帮助我们进行改进... data-lang=zh></div><div id=feedback-thankyou>感谢您的反馈！</div></div><div id=endnotes-container aria-hidden=true><h2>链接</h2><ol id=endnotes></ol></div></div><div class=toc-container><nav class=toc aria-label="Table of Contents"><div id=toc><ol><li role=none aria-label="使用 API"><a href=#using-api>使用 API</a><ol><li role=none aria-label="作用域、继承和覆盖 "><a href=#scope-inheritance-and-overrides>作用域、继承和覆盖</a><li role=none aria-