html - href="javascript:func()" vs href="#" onclick="javascript:func()" -

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<a href="javascript:expand()">  , <a href="#" onclick="javascript:expand()">

what's difference?

i know href="#" more standard way nowadays it. problem have standard dropdown menu expands/collapses when user clicks on toggle.

if href="#" code below, whenever clicks on expand page scroll right top isn't acceptable user friendly point.

if use href="javascript:expand()" when user clicks expand, page doesn't move , ok.

so there problems if use href="javascript:expand()" instead? or how fix href="#" page doesn't scroll top whenever user clicks expand.

thanks.

edit: know question may have been asked before, i'm looking @ point of view. im asking suggestion rather explanation.

if javascript onclick event handler returns false, scrolling won't occur. can this:

<a href="#" onclick="expand(); return false;">

if onclick handler not return false, href link followed. in case of href="#", means scroll top of page.


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