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How to Get Previous URL in JavaScript

Often you may need to get previous URL in JavaScript. Here are the steps to retrieve previous page in JavaScript.

Sometimes you may need to get client timezone and offset in JavaScript. Here are the steps to do it.

Sometimes you may need to check if JS object has property. Here are the steps to do so.

Sometimes you may need to auto increment column with prefix in MySQL. Here are the steps to do so.

Sometimes you may need to set initial value and auto increment in MySQL. Here are the steps to do it.

Sometimes you may need to create DMARC record for your domain. Here are the steps to do it.

Sometimes you may need to get column names from table in MySQL. Here are the steps to do it.

Often we may need to find min & max values of column in pandas. Here are the steps to do it.

Sometimes you may need to redirect stdout and stderr to file in Python. Here are the steps to do it.

Sometimes you may need to extract numbers from string in Python. Here are the steps to do it.