js判断background颜色明暗色调,以设置白/黑字体颜色

整理自:jscolor.js插件

 

this.styleElement.style.color =
this.isLight()
?
'#000'
:
'#FFF';

 

this.isLight =
function
()
{

return
(

0.213
*
this.rgb[0]
+

0.715
*
this.rgb[1]
+

0.072
*
this.rgb[2]
>

255
/
2

);

};