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----
-title: 'TypeError: invalid arguments'
-slug: Web/JavaScript/Reference/Errors/Typed_array_invalid_arguments
-tags:
- - JavaScript
- - 类型错误
- - 错误提示
-translation_of: Web/JavaScript/Reference/Errors/Typed_array_invalid_arguments
----
-<div>{{jsSidebar("Errors")}}</div>
-
-<h2 id="错误提示">错误提示</h2>
-
-<pre class="syntaxbox">TypeError: invalid arguments (Firefox)</pre>
-
-<h2 id="错误类型">错误类型</h2>
-
-<p>{{jsxref("TypeError")}}</p>
-
-<h2 id="哪里出错了?">哪里出错了?</h2>
-
-<p><a href="/en-US/docs/Web/JavaScript/Typed_arrays">类型化数组(Typed array</a>) 的构造器可以通过接收以下类型的参数中的一种</p>
-
-<ul>
- <li>表示长度的数字,</li>
- <li>另外一个类型化数组,</li>
- <li>类数组对象,</li>
- <li>可迭代对象,</li>
- <li>一个 {{jsxref("ArrayBuffer")}} 对象</li>
-</ul>
-
-<p>来创建一个新的类型化数组。其他类型的构造器参数都无法创建合法的类型化数组。</p>
-
-<h2 id="示例">示例</h2>
-
-<p>类型化数组——例如  {{jsxref("Uint8Array")}} ——无法通过字符串创建。实际上,字符串根本不能出现在类型化数组中。</p>
-
-<pre class="brush: js example-bad">var ta = new Uint8Array("nope");
-// TypeError: invalid arguments
-</pre>
-
-<p>创建一个合法的 {{jsxref("Uint8Array")}} 对象的不同方式:</p>
-
-<pre class="brush: js example-good">// From a length
-var uint8 = new Uint8Array(2);
-uint8[0] = 42;
-console.log(uint8[0]); // 42
-console.log(uint8.length); // 2
-console.log(uint8.BYTES_PER_ELEMENT); // 1
-
-// From an array
-var arr = new Uint8Array([21,31]);
-console.log(arr[1]); // 31
-
-// From another TypedArray
-var x = new Uint8Array([21, 31]);
-var y = new Uint8Array(x);
-console.log(y[0]); // 21
-
-// From an ArrayBuffer
-var buffer = new ArrayBuffer(8);
-var z = new Uint8Array(buffer, 1, 4);
-
-// From an iterable
-var iterable = function*(){ yield* [1,2,3]; }();
-var uint8 = new Uint8Array(iterable);
-// Uint8Array[1, 2, 3]
-</pre>
-
-<h2 id="相关内容">相关内容</h2>
-
-<ul>
- <li><a href="/en-US/docs/Web/JavaScript/Typed_arrays">Typed arrays</a></li>
- <li>{{jsxref("ArrayBuffer")}}</li>
- <li>{{jsxref("Uint8Array")}}</li>
-</ul>