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marwa khalaf , .Net Developer , Sands National Academy
The behavior of a Web browser when it receives an invalid element depends on the browser that you use to browse your application. Most of the browsers ignore the invalid element; whereas, some of them display the invalid elements on the page.
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Furqan Ul Karim , Senior Delivery Manager (Contract) , Virgin Red
Well, Firefox ignores the invalid element but Internet explorer pops up an error message.
But this is not always a case as with xml issue firefox just shows the first line with error heading.
Most of the time it happens with xml or client side code(javascript, DOM, jquery)