checking the page exist or not using javascript and ajax [duplicate]

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How to check if a page is exist or not using javascript

can you provide the code for checking the page exi开发者_开发知识库st or not.if not,it will redirect to another page.

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The problem is, if the page doesn't exist (the server is given what it considers an invalid url that it cannot satisfy), you will get a 404 error. So no code on any target page is going to run. Instead you have to do this server side, specifying what page to serve instead when a 404 is encountered. It is not done with client-side javascript.