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function rgb2hex(rgb) { rgb = rgb.match(/^rgb\((\d+),(\d+),(\d+)\)$/); function hex(x) { return ("0" + parseInt(x).toString(16)).slice(-2); } return "#" + hex(rgb[1]) + hex(rgb[2]) + hex(rgb[3]); } var rgb = ‘rgb(255,255,255)‘; console.log(rgb2hex(rgb));
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原文地址:http://www.cnblogs.com/jdhu/p/4331994.html