How to check if a element exists in Javascript / jQuery
To check if a element exists in Javascript you can use the following snippet. Sample Javascript Sample jQuery
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To check if a element exists in Javascript you can use the following snippet. Sample Javascript Sample jQuery
To check if a table exists in MSSQL you can use one of these two snippets. Sample MSSQL using INFORMATION_SCHEMA Sample MSSQL using OBJECT_ID
To check if a file exists using Python you can import os.path and use isfile method. Sample Python for more informations see Common pathname manipulations