hasFeature Method

DHTML文档教程

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Returns a value that indicates whether the object implements a specific Document Object Model (DOM) standard.

dhtml语法

bImplemented = implementation.hasFeature(sFeature [, vVersion])

Parameters

sFeature	Required. Name of the standard. XML DOM Core standard. HTML DOM HTML standard.
vVersion	Optional. Version number of the standard. 1.0 Level 1.

Return Value

Returns one of the following possible values:

true	Standard is implemented.
false	Standard is not implemented.

Remarks

The sFeature parameter is case-insensitive.

DHTML代码范例

The code in the following example uses the hasFeature method to test whether the object implements the DOM HTML standard.

var bSupported = document.implementation.hasFeature("HTML","1.0");

是否符合公共标准

This method is defined in World Wide Web Consortium (W3C) Document Object Model (DOM) Level 1 .

Applies To

	implementation