check if variable is defined

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showing results for - "check if variable is defined"
Eleanor
29 Oct 2016
1if (typeof myVar !== 'undefined') {
2    // myVar is defined
3}
source
Madeleine
18 Mar 2017
1try:
2    thevariable
3except NameError:
4    print("well, it WASN'T defined after all!")
5else:
6    print("sure, it was defined.")
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