I have to automate a system, which changes its ID's from time to time, and the XPath is not static.
What is the best way to automate this kind of system?
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When IDs are dynamic (frequently database IDs) you can use the following strategies (listed in preferred order) to locate the element:
name=) as fixed identifiers to the source
//body/table/tr/div/... etc. using
All of the above have advantages and disadvantages. It's up to you and your individual situation as to which will be most appropriate. Some will work in some situations other will not. You may need to mix and match several of the approaches for a given page to select different elements.
Whenever Id's are dynamic then CSS selector is the best way to locate an element, but if you want to use Xpath then you can use Dynamic Xpath methods like:-
(//tagname[@attribute-name = 'value']).
(//tagname[@attribute-name1 = 'value1'][@attribute-name2='value2']).
(xpath/following::again-ur-regular-path). **example =>** //a[@href='xyz']/following::a