jQuery find width of each li element?

anyone know a way to find the width of each li within the ul?

I tried

var totalWidth;
jQuery("ul li").each(function() { totalWidth += jQuery(this).outerWidth(); });

But didn't work..开发者_如何学JAVA.

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You need to initialize the variable first:

var totalWidth = 0;

...otherwise you're starting out effectively doing:

undefined += jQuery(this).outerWidth();

...which results in NaN for subsequent iterations:

NaN += jQuery(this).outerWidth();

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Initiate the variable as 0. Your code seems like it should work