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JavaScript 是一种具有函数优先的轻量级、解释型、即时编译型的编程语言。
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JavaScript
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<a href=".." >会话存储</a>
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<h1 id="会话存储">会话存储</h1>
<p>会话存储仅在当前标签页打开有效，关闭即销毁。</p>
<pre class="language-"><code class="lang-javascript">sessionStorage<span class="token punctuation">.</span><span class="token function">setItem</span><span class="token punctuation">(</span><span class="token string">'name'</span><span class="token punctuation">,</span> <span class="token string">'Tom'</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
sessionStorage<span class="token punctuation">.</span><span class="token function">setItem</span><span class="token punctuation">(</span><span class="token string">'age'</span><span class="token punctuation">,</span> <span class="token number">20</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span>sessionStorage<span class="token punctuation">.</span><span class="token function">getItem</span><span class="token punctuation">(</span><span class="token string">'name'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span>sessionStorage<span class="token punctuation">.</span><span class="token function">getItem</span><span class="token punctuation">(</span><span class="token string">'age'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<p>存储复杂数据类型时，需要将数据转换为 JSON 字符串形式。</p>
<pre class="language-"><code class="lang-javascript"><span class="token keyword">let</span> obj <span class="token operator">=</span> <span class="token punctuation">{</span>
name<span class="token operator">:</span> <span class="token string">'Tom'</span><span class="token punctuation">,</span>
age<span class="token operator">:</span> <span class="token number">20</span>
<span class="token punctuation">}</span>
sessionStorage<span class="token punctuation">.</span><span class="token function">setItem</span><span class="token punctuation">(</span><span class="token string">'obj'</span><span class="token punctuation">,</span> <span class="token constant">JSON</span><span class="token punctuation">.</span><span class="token function">stringify</span><span class="token punctuation">(</span>obj<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span>sessionStorage<span class="token punctuation">.</span><span class="token function">getItem</span><span class="token punctuation">(</span><span class="token string">'obj'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token constant">JSON</span><span class="token punctuation">.</span><span class="token function">parse</span><span class="token punctuation">(</span>sessionStorage<span class="token punctuation">.</span><span class="token function">getItem</span><span class="token punctuation">(</span><span class="token string">'obj'</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
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