JavaScript+canvas实现七色板效果实例_javascript技巧
程序员文章站
2022-03-11 10:22:11
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本文实例讲述了JavaScript+canvas实现七色板效果。分享给大家供大家参考,具体如下:
效果图如下:
html:
css:
html,body{margin: 0;padding: 0} .canvas{display: block; margin-left:auto;margin-right:auto;margin-top: 50px;}
javascript:
var disk = [ { area:[{x:0,y:0},{x:600,y:0},{x:300,y:300}], color:"#CBF263" }, { area:[{x:0,y:0},{x:0,y:600},{x:300,y:300}], color:"#5CB6D0" }, { area:[{x:0,y:600},{x:300,y:600},{x:150,y:450}], color:"#FE9CCD" }, { area:[{x:150,y:450},{x:300,y:300},{x:450,y:450},{x:300,y:600}], color:"#A696C3" }, { area:[{x:300,y:600},{x:600,y:600},{x:600,y:300}], color:"#FBC421" }, { area:[{x:600,y:300},{x:600,y:0},{x:450,y:150},{x:450,y:450}], color:"#FF5061" }, { area:[{x:450,y:450},{x:450,y:150},{x:300,y:300}], color:"#FDEA11" } ] window.onload = function(){ var canvasDom = document.getElementById("canvas"); var ctx = canvasDom.getContext("2d"); drawDisk(disk,ctx) } function drawDisk(disk,ctx){ for(var i = 0;i
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希望本文所述对大家JavaScript程序设计有所帮助。
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