rgba的单独红色绿色蓝色值Colur值

问题描述

我将rgba值设置为RGBA(205,31,31,1)格式，我想将每个红色，绿色，蓝色和alpha值分开以进行进一步处理，如何使用jQuery实现它；所以输出看起来像

I'hv rgba value in this format RGBA(205,31,31,1) and I want to separate each red, green, blue and alpha value for further processing how can I achieve it using jQuery; so the output looks like

red = 205
green = 31
blue = 31
alpha =1

推荐答案

要从字符串变量中获取这些值很容易，可以使用以下答案，因此您不需要jQuery

To get these values from a string variable is easy with the following answer so you don't need jQuery

借助 正则表达式 ，您可以轻松实现它

With the help of regex, you can easily achieve it like

var color = "RGBA(205,31,31,1)";
var regExp = /\(([^)]+)\)/;  // get the values within ()
var matches = regExp.exec(color);
var splits = matches[1].split(',');
alert("red: " + splits[0] + "green: " + splits[1]+ "blue: "+ splits[2]+ "alpha: " +splits[3] );

JSFiddle

不过要从元素获取rgba值，您可以使用jQuery的 css 方法.

However to get the rgba value from an element you can use jQuery's css method.

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