javascript - Slow down scroll to top event by jQuery animate -

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When some anchor is clicked, I want to go to the top of my page. 

  $ ('a [href = # top]').  
 Click here function () {$ ('body'). Chetan ({scrollTop: 0}, 50);});

I want to slow it down. 

  $ ('A [href = # top]'). Click (function () {$ ('html, body'). Animate ({scrollTop: 0}, 'slow');});

Maybe?


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