depth-0"><p class="sidebar-heading open"><span>基础篇</span> <span class="arrow down"></span></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/javascript/utility/lexical-grammar.html" class="sidebar-link">JavaScript 词法</a></li><li><a href="/javascript/utility/syntax.html" class="sidebar-link">JavaScript 语法</a></li><li><a href="/javascript/ES6/block.html" class="sidebar-link">[ES6]由块级作用域引出的一场变革</a></li><li><a href="/javascript/utility/javascript-type.html" 