js 翻转颜色实现代码


答案：复制代码 代码如下:

function reverseColor(rgbColor) {//205,15,20 
// console.log(rgbColor); 
rgbColor = rgbColor.replace(/\s/g, ""); 
var arrRGB = new Array(3); 
if (rgbColor.indexOf("rgb") > -1) { 
var colorReg = /\s*\d+,\s*\d+,\s*\d+/i; 
var t = colorReg.exec(rgbColor)[0].split(","); 
console.log(t); 
for (var i = 0; i < arrRGB.length; i++) { 
arrRGB[i] = 255 - t[i]; 
} 
} 
else if (rgbColor.indexOf("#") > -1) { 
if (rgbColor.length > 4)//"#fc0,#ffcc00" 
{ 
var j = 1; 
for (var i = 0; i < arrRGB.length; i++) { 
arrRGB[i] = 255 - parseInt(rgbColor.substr((i + j), 2), 16); 
j += 1; 
} 
} else { 
for (var i = 0; i < arrRGB.length; i++) { 
var t = rgbColor.substr((i + 1), 1); 
t = t + t; 
arrRGB[i] = 255 - parseInt(t, 16); 
} 
} 
} 
return "rgb(" + arrRGB.join(",") + ")"; 
}

演示代码:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<title>将#ffffff转换成rgb(0,0,0)格式的颜色代码</title> 
</head> 
<body> 
<script language="javascript"> 
function reverseColor(rgbColor) {//205,15,20 
// console.log(rgbColor); 
rgbColor = rgbColor.replace(/\s/g, ""); 
var arrRGB = new Array(3); 
if (rgbColor.indexOf("rgb") > -1) { 
var colorReg = /\s*\d+,\s*\d+,\s*\d+/i; 
var t = colorReg.exec(rgbColor)[0].split(","); 
console.log(t); 
for (var i = 0; i < arrRGB.length; i++) { 
arrRGB[i] = 255 - t[i]; 
} 
} 
else if (rgbColor.indexOf("#") > -1) { 
if (rgbColor.length > 4)//"#fc0,#ffcc00" 
{ 
var j = 1; 
for (var i = 0; i < arrRGB.length; i++) { 
arrRGB[i] = 255 - parseInt(rgbColor.substr((i + j), 2), 16); 
j += 1; 
} 
} else { 
for (var i = 0; i < arrRGB.length; i++) { 
var t = rgbColor.substr((i + 1), 1); 
t = t + t; 
arrRGB[i] = 255 - parseInt(t, 16); 
} 
} 
} 
return "rgb(" + arrRGB.join(",") + ")"; 
} 
alert(reverseColor("#ffffff")); //将#ffffff转换成rgb(0,0,0)格式的颜色代码 
</script> 
</body> 
<html>

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