我是 foreignObject Div 来的 Normal Multiply Screen Darken Lighten Unfiltered Matrix Saturate HueRotate Luminance Identity TableLookup LinearFunc GammaFunc This is some text! Unfiltered Erode 1 Erode 3 Erode 4 Dilate 1 Dilate 3 Dilate 4 It's SVG! 参考引用自：http://www.w3school.com.cn/svg/svg_examples.asp