1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
---
title: SyntaxError
slug: Web/JavaScript/Reference/Global_Objects/SyntaxError
tags:
- Error
- JavaScript
- Object
- SyntaxError
translation_of: Web/JavaScript/Reference/Global_Objects/SyntaxError
---
<div>{{JSRef}}</div>
<p><code><strong>SyntaxError</strong></code> 对象代表尝试解析语法上不合法的代码的错误。</p>
<h2 id="Description">描述</h2>
<p>当Javascript语言解析代码时,Javascript引擎发现了不符合语法规范的tokens或token顺序时抛出<code>SyntaxError</code>.</p>
<h2 id="Syntax">语法</h2>
<pre class="syntaxbox"><code>new SyntaxError([<var>message</var>[, <var>fileName</var>[, <var>lineNumber</var>]]])</code></pre>
<h3 id="Parameters">参数</h3>
<dl>
<dt><code>message</code></dt>
<dd>可选的. 可阅读的错误描述信息</dd>
<dt><code>fileName</code> {{non-standard_inline}}</dt>
<dd>可选的. 包含引发异常的代码的文件名</dd>
<dt><code>lineNumber</code> {{non-standard_inline}}</dt>
<dd>可选的. 包含引发异常的代码的行号</dd>
</dl>
<h2 id="Properties">属性</h2>
<dl>
<dt>{{jsxref("SyntaxError.prototype")}}</dt>
<dd><code>允许SyntaxError</code>对象添加属性.</dd>
</dl>
<h2 id="Methods">方法</h2>
<p>全局 <code>SyntaxError</code> 自身不包含任何方法, 但从原型链中继承了一些方法.</p>
<h2 id="SyntaxError_instances"><code>SyntaxError</code> 实例</h2>
<h3 id="Properties_of_SyntaxError_instances">属性</h3>
<div>{{page('/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/SyntaxError/prototype', '属性')}}</div>
<h3 id="Methods_of_SyntaxError_instances">方法</h3>
<div>{{page('/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/SyntaxError/prototype', '方法')}}</div>
<h2 id="Examples">示例</h2>
<h3 id="Example:_Catch_an_SyntaxError">捕获 <code>SyntaxError</code></h3>
<pre class="brush: js">try {
eval('hoo bar');
} catch (e) {
console.log(e instanceof SyntaxError); // true
console.log(e.message); // "missing ; before statement"
console.log(e.name); // "SyntaxError"
console.log(e.fileName); // "Scratchpad/1"
console.log(e.lineNumber); // 1
console.log(e.columnNumber); // 4
console.log(e.stack); // "@Scratchpad/1:2:3\n"
}
</pre>
<h3 id="Example:_Create_an_SyntaxError">创建 <code>SyntaxError</code></h3>
<pre class="brush: js">try {
throw new SyntaxError('Hello', 'someFile.js', 10);
} catch (e) {
console.log(e instanceof SyntaxError); // true
console.log(e.message); // "Hello"
console.log(e.name); // "SyntaxError"
console.log(e.fileName); // "someFile.js"
console.log(e.lineNumber); // 10
console.log(e.columnNumber); // 0
console.log(e.stack); // "@Scratchpad/2:11:9\n"
}
</pre>
<h2 id="规范">规范</h2>
<table class="standard-table">
<tbody>
<tr>
<th scope="col">Specification</th>
<th scope="col">Status</th>
<th scope="col">Comment</th>
</tr>
<tr>
<td>{{SpecName('ES3')}}</td>
<td>{{Spec2('ES3')}}</td>
<td>Initial definition.</td>
</tr>
<tr>
<td>{{SpecName('ES5.1', '#sec-15.11.6.4', 'SyntaxError')}}</td>
<td>{{Spec2('ES5.1')}}</td>
<td> </td>
</tr>
<tr>
<td>{{SpecName('ES6', '#sec-native-error-types-used-in-this-standard-syntaxerror', 'SyntaxError')}}</td>
<td>{{Spec2('ES6')}}</td>
<td> </td>
</tr>
</tbody>
</table>
<h2 id="浏览器兼容性">浏览器兼容性</h2>
{{Compat}}
<h2 id="相关链接">相关链接</h2>
<ul>
<li>{{jsxref("Error")}}</li>
<li>{{jsxref("SyntaxError.prototype")}}</li>
</ul>
|
