html - How do I create a class in Javascript? -

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This is what I have so far received, and it is not working at all: (all variables are my player class

I mean a programming class, not a CSS class, not IE (.movingdiv {color: # ff0000;}) 

 < Code> & gt; DOCTYPE Html> gt; html lang = "en" & gt; & gt; head & gt; & lt; title & gt; class test & lt; / title & gt; meta charset = "Utf-8" /> 
 
 Body {text-align: center; Background color: #ffffff;} # box {condition: flood Left: 610px; top: 80px; height: 50px; width: 50px; background color: #ff0000; color: # 000000;}

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