Question

141

rated 0 times [ 144] [ 3] / answers: 1 / hits: 31263 / 13 Years ago, sun, july 31, 2011, 12:00:00

In this tutorial there is written:

If you redeclare a JavaScript variable, it will not lose its value.

Why should I redeclare a variable? Is it practical in some situations?

thank you

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4 Years ago

answered 13 Years ago miles · Accepted Answer

It's nothing more than a reminder that if you do this:

var x=5;

var x;

alert(x);

Result will be 5.

If you re-declare variable in some other languages for example - result will be undefined, or NaN, but not in javascript.