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How do I check for an empty/undefined/null string in JavaScript? - Stack Overflow
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How to Check If String is Empty in JavaScript
How to check empty/undefined/null string in JavaScript? - GeeksforGeeks
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When zero is equal to empty string | Yudy's Blog
When zero is equal to empty string | Yudy's Blog
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JavaScript: "" (Empty String) vs. 0 vs. null vs. undefined : r/ProgrammerHumor
