在界面上添加“屬性”，在javascript的方法 get_property_value 中添加代碼返回相應的值即可，例如
function get_property_value(property)
{
if (property == "outertext") { //自己重寫(xiě)基類(lèi)的outertext屬性
return _elem.outerText;
}
else if (property == "rowindex") { //對自己新加的屬性的
return getRowIndex();
如果希望繼承的基類(lèi)的原有Identification Properties也可以用，就也需要添加上屬性，但不需要在get_property_value那里處理。比如繼承自WebElement的自定義對象，要原有的outertext屬性也可以用時(shí)，就需要添加一個(gè)名字為outertext的屬性給你的新類(lèi)�？梢栽诮缑嫔咸砑�，不可以控制某些屬性的時(shí)候，可能需要手工編輯對應的“*TestObjects.xml” 文件吧，那個(gè)配置文件指定了你的自定義對象的屬性和方法等。
注意： 屬性最好返回string的字符串類(lèi)型，在javascript用var i=3; i.toString()轉換一下。我發(fā)現返回數字類(lèi)型的時(shí)候在qtp的“描述式編程”(Programmatic Descriptions)方式在代碼里面指定對象的話(huà)，整型數的屬性使用不了。
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HP QTP 文檔
Implementing Support for Identification Properties
In the test object configuration file you defined the identification properties for your test object classes. When QuickTest runs a test it needs to retrieve the values for these properties. QuickTest uses identification property run-time values in different test object methods, such as GetROProperty. Identification property run-time values are also required for different basic capabilities, such as creating checkpoints and outputting values.
To support retrieving the run-time values of identification properties, you need to implement a JavaScript function that accepts a PropertyName parameter and returns the value of any property QuickTest requests. (QuickTest uses only lowercase letters in identification property names. If the identification property name in the test object configuration file contains uppercase letters, they are converted to lowercase.)
This function must return the property value in one of the following formats: String, Integer, Boolean, or array. When returning an array, use the toSafeArray function to convert the array to the format that QuickTest expects. When you provide an identification property value in an array format, QuickTest converts the array to a semicolon-delimited string.
For more information on writing JavaScript functions for Web Add-in Extensibility, see Designing JavaScript Functions for Your Toolkit Support Set.
QuickTest uses the base test object class implementation to retrieve the identification property values when the following conditions are met:
The control includes a base element (for more information, see Extending an Existing Test Object Class).
The identification property is defined in the test object configuration file with the same name as a base test object class property.
You do not provide a function that returns a value for that identification property.
Implement your JavaScript function to return a value for the identification properties defined in the test object configuration file in the following situations:
Base test object class implementation for retrieving the value for this identification property value is not available.
The base test object class implementation does not meet your needs.
By designing the function that returns identification property values to return a value for the logical_name property, you can control how QuickTest names test objects of this test object class. For more information, see Customizing the Test Object Name.
In the toolkit configuration file, you can specify the JavaScript file in which you implemented the JavaScript function that retrieves property values. You can also specify the name of the function that you implemented for this purpose (in theControl\Run\Properties element). However, if you do not specify a function name, QuickTest callsget_property_value (PropertyName) and this is the function that you must implement. If you do not specify a file name, QuickTest calls the function from the default JavaScript file you specified in the Control\Settings element (at the test object class level) or in the Controls\Settings element (at the toolkit level). For more information, see the Toolkit Configuration Schema Help.
After you create support for retrieving the run-time values of identification properties, you can test that your toolkit support set correctly enables QuickTest to run checkpoints on your Web elements, output property values, display the property values in the Object Spy, and run test steps with the GetROProperty operation. For more information on testing your toolkit support set, see Testing the Toolkit Support Set During Development.
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