如何检查CSS背景颜色是否为白色?

I need this:

我需要这个:

$('*').each(function() {
        if($(this).css("background-color") == "#ffffff") {
           $(this).css("background-color") == "#000000"
        }
    });

to work onclick of an class.

单击一个类来工作。

1 个解决方案

#1

Even if it were correct (it's not), it would be unreliable and unlikely to work. The reason for that is that there are several ways of showing a white colour:

即使它是正确的(它不是)，它将是不可靠的并且不可能工作。原因是有几种方式显示白色:

white
白色的
#ffffff and all 64 case combinations thereof
#ffffff和所有64个案例组合。
#fff and all 8 case combinations thereof
#fff和所有8个案例组合。
rgb(255,255,255) and all ∞ combinations of arbitrary whitespace between values
rgb(255255255)和所有∞组合之间的任意空白值
rgba(255,255,255,1) and all ∞ combinations of arbitrary whitespace between values
rgba(255255255 1)和所有∞组合之间的任意空白值

You could check it this way:

你可以这样检查:

if( $(this).css("background-color").match(/^(?:white|#fff(?:fff)?|rgba?\(\s*255\s*,\s*255\s*,\s*255\s*(?:,\s*1\s*)?\))$/i))
    this.style.backgroundColor = "#000";

#1