JS Object realization Random Sky small star instance

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1 <!DOCTYPE HTML>2 <HTML>3 <Head>4     <MetaCharSet= "UTF-8">5     <title>Little stars in the sky</title>6     <Metaname= "keywords"content= "Keyword list" />7     <Metaname= "description"content= "page description" />8     <Linkrel= "stylesheet"type= "Text/css"href="" />9     <styletype= "Text/css"></style>Ten     <Scripttype= "Text/javascript"> One          A window.onload= function(){ -             //1. To turn on the timer - SetInterval ("createimg ()",4000); the         } -          -         //represents the maximum and minimum values for a picture -         varImg_min_width=  the; +         varImg_max_width=  -; -         //Control the extent of the picture appearing +         varX_left= 0; A         varX_right=window.innerwidth-Img_max_width; at         varY_top= 0; -         varY_bottom=Window.innerheight-Img_max_width; -  -  -         //Timer function -         functioncreateimg () { in             //2. Create a picture Label object -             varImg_node=Document.createelement ("img"); to //then add the src attribute to the tag object + Img_node.setattribute ("src","Images/xingxing.gif"); -             //and append the created IMG tag to the body tag. the Document.body.appendChild (img_node); *              //The image size appears randomly $ Img_node.setattribute ("width", Getrandom (img_max_width,img_min_width));Panax Notoginseng             //the location of the 4 images is also randomly appearing!  -              varx=Getrandom (x_right,x_left); the              vary=Getrandom (y_bottom,y_top); + Img_node.setattribute ("style","Position:absolute;left:"+x+"Px;top:"+y+"px;"); A              //5. When the mouse clicks on the current star, it will remove the current star. the Img_node.setattribute ("onclick","removeimg (This)"); +         } -  $         functionGetrandom (max,min) { $             returnMath.floor (Math.random ()*(Max-min+1)+min); -         } -          the  -         //The function is to remove the current star is actually to remove the IMG tagWuyi         functionremoveimg (obj) { the             //The parent element of the label object that is currently being removed. RemoveChild (the Label object to remove) - obj.parentNode.removeChild (obj); Wu         } -      About     </Script> $ </Head> - <Body> -      - </Body> A </HTML>
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JS Object realization Random Sky small star instance

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