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<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1632085368384154" crossorigin="anonymous"></script><script src="https://autohotkey.top/gtag.js"></script></head> <body> <h1>HasBase</h1> <p>如果指定的值派生自指定的基对象, 则返回非零数字.</p> <pre class="Syntax">HasBase := <span class="func">HasBase</span>(Value, BaseObj)</pre> <h2 id="Parameters">参数</h2> <dl> <dt>Value</dt> <dd> <p>任何类型的任何值.</p> </dd> <dt>BaseObj</dt> <dd> <p>类型: <a href="../Concepts.htm#objects">对象</a></p> <p>要测试的潜在基对象.</p> </dd> </dl> <h2 id="Return_Value">返回值</h2> <p>类型: <a href="../Concepts.htm#boolean">整数(布尔值)</a></p> <p>如果 <em>BaseObj</em> 在 <em>Value</em> 的基对象链中, 函数返回 true, 否则返回 false.</p> <h2 id="Remarks">备注</h2> <p>下面的代码大致相当于这个函数:</p> <pre>MyHasBase(Value, BaseObj) { b := Value while b := ObjGetBase(b) if b = BaseObj return true return false }</pre> <p>例如, 如果 <em>Obj</em> 是数组或任何派生类的实例, 则 <code>HasBase(Obj, Array.Prototype)</code> 为 true. 这与 <code>Obj is Array</code> 执行的检查相同; 但是, 实例可以基于其他实例, 而 <code>is</code> 需要一个类.</p> <p>HasBase 同时接受对象和<a href="../Objects.htm#primitive">原始值</a>. 例如, <code>HasBase(1, 0.base)</code> 返回 true.</p> <h2 id="Related">相关</h2> <p><a href="../Objects.htm">Objects</a>, <a href="Object.htm#Base">Obj.Base</a>, <a href="Any.htm#GetBase">ObjGetBase</a>, <a href="HasMethod.htm">HasMethod</a>, <a href="HasProp.htm">HasProp</a></p> <h2 id="Examples">示例</h2> <div class="ex" id="ExBasic"> <p><a class="ex_number" href="#ExBasic"></a> 说明函数的用法.</p> <pre> thebase := {key: "value"} derived := {base: thebase} MsgBox HasBase(thebase, derived) <em>; 0</em> MsgBox HasBase(derived, thebase) <em>; 1</em> </pre> </div> <a href="https://dftg.net">dftg</a><!-- Cloudflare Pages Analytics --><script defer src='https://static.cloudflareinsights.com/beacon.min.js' data-cf-beacon='{"token": "d5a9c4fcb9b6482fa53ce820d892f969"}'></script><!-- Cloudflare Pages Analytics --><script defer src="https://static.cloudflareinsights.com/beacon.min.js/vcd15cbe7772f49c399c6a5babf22c1241717689176015" integrity="sha512-ZpsOmlRQV6y907TI0dKBHq9Md29nnaEIPlkf84rnaERnq6zvWvPUqr2ft8M1aS28oN72PdrCzSjY4U6VaAw1EQ==" data-cf-beacon='{"rayId":"93fa05825dc672cb","version":"2025.4.0-1-g37f21b1","r":1,"serverTiming":{"name":{"cfExtPri":true,"cfL4":true,"cfSpeedBrain":true,"cfCacheStatus":true}},"token":"51750bb5dc4f40cc91a5ec55c63bbc01","b":1}' crossorigin="anonymous"></script> </body> </html>