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freeCodeCamp/guide/english/certifications/javascript-algorithms-and-data-structures/basic-javascript/understanding-uninitialized-variables/index.md
Randell Dawson 1494a50123 fix(guide): restructure curriculum guide articles (#36501) 
* fix: restructure certifications guide articles
* fix: added 3 dashes line before prob expl
* fix: added 3 dashes line before hints
* fix: added 3 dashes line before solutions
2019-07-24 13:29:27 +05:30

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title
Understanding Uninitialized Variables

Understanding Uninitialized Variables

Hints

Hint 1

Make sure that the variable has the correct data value. Leaving a variable uninitialized, meaning you do not give it a value, can cause problems if you want to do operations on it.