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Continue to ChatJavaScript check if a variable is defined and not empty | Example https://tutorial.eyehunts.com/js/javascript-check-if-a-variable-is-defined-and-not-empty-example/
JavaScript check if a variable is defined and not empty | Example https://tutorial.eyehunts.com/js/javascript-check-if-a-variable-is-defined-and-not-empty-example/