WebAssembly.LinkError()

WebAssembly.LinkError()构造器创建一个新的WebAssembly LinkError对象,该对象表明一个模块创建时(besides traps from the start function)发生的错误.

句法

new WebAssembly.LinkError(message, fileName, lineNumber)

Parameters

message可选: 自然语言对错误的描述.
fileName可选: 包含抛出异常代码的代码文件名.
lineNumber可选: 抛出异常的代码行号.

Properties

LinkError不包含自己独立的属性,它仅仅继承了原型链上的属性.

WebAssembly.LinkError.prototype.constructor: 指明创建该实体的构造函数.
WebAssembly.LinkError.prototype.message: Error message. Although ECMA-262 specifies that URIError should provide its own message property, in SpiderMonkey, it inherits Error.prototype.message.
WebAssembly.LinkError.prototype.name: Error name. Inherited from Error.
WebAssembly.LinkError.prototype.fileName: Path to file that raised this error. Inherited from Error.
WebAssembly.LinkError.prototype.lineNumber: Line number in file that raised this error. Inherited from Error.
WebAssembly.LinkError.prototype.columnNumber: Column number in line that raised this error. Inherited from Error.
WebAssembly.LinkError.prototype.stack: Stack trace. Inherited from Error.

Methods

The LinkError constructor contains no methods of its own, however, it does inherit some methods through the prototype chain.

WebAssembly.LinkError.prototype.toSource(): 返回可以执行并得到与该错误对象相同的源代码.
WebAssembly.LinkError.prototype.toString(): 返回一个可以说明该Error对象的文字.继承自Error.

Examples

下列代码片段创建了一个新的LinkError实例,并将其打印到控制台:

try {
  throw new WebAssembly.LinkError('Hello', 'someFile', 10);
} catch (e) {
  console.log(e instanceof LinkError); // true
  console.log(e.message);                 // "Hello"
  console.log(e.name);                    // "LinkError"
  console.log(e.fileName);                // "someFile"
  console.log(e.lineNumber);              // 10
  console.log(e.columnNumber);            // 0
  console.log(e.stack);                   // returns the location where the code was run
}