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class=\"gatsby-highlight\" data-language=\"javascript\"><pre class=\"language-javascript\"><code class=\"language-javascript\"><span class=\"token keyword\">const</span> target <span class=\"token operator\">=</span> <span class=\"token punctuation\">{</span>\n\tid<span class=\"token punctuation\">:</span> <span class=\"token string\">'sub1'</span><span class=\"token punctuation\">,</span>\n  children<span class=\"token punctuation\">:</span> <span class=\"token punctuation\">[</span><span class=\"token operator\">...</span><span class=\"token punctuation\">]</span>\n<span class=\"token punctuation\">}</span>\n\n<span class=\"token comment\">// 从target节点开始查找sub1.1节点</span>\n<span class=\"token keyword\">const</span> subData <span class=\"token operator\">=</span> treeGraph<span class=\"token punctuation\">.</span><span class=\"token function\">findDataById</span><span class=\"token punctuation\">(</span><span class=\"token string\">'sub1.1'</span><span class=\"token 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