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How to Change Image Source in jQuery

Sometimes you may need to change image source in web pages. Here is how to change image source in jQuery.

Sometimes you may need to check for hash in URL using JavaScript. Here are the steps to do it.

Sometimes you may need to check if file exists in NodeJS. Here are the steps to do so.

Sometimes you may need to load local JSON file on your web page. Here are the steps to do it.

Often web developers need to display loading spinner on their websites. Here is how to show loading spinner in jQuery.

Sometimes you may need to convert string to Boolean in JavaScript. Here are the steps to do so.

Sometimes you may need to convert decimal to hexadecimal in JavaScript. Here are the steps to do so.

Sometimes you may need to add 30 minutes to JS date object. Here are the steps to do it.

Often web developers need to measure execution time in JS. Here is how to measure time taken by JS function to execute.

Sometimes you may need to replace part of string in update query in MySQL. Here are the steps to do so.