It's perfectly valid to add input filtering on top of type=email if you want to further restrict the input set. Maybe you hate people with gmail addresses or only want to allow email addresses at your local firm (both examples from before!). In that case, having a more restrictive pattern makes sense.
「正确的事」能安抚焦躁的情绪，让所有人都能达成共识。。业内人士推荐体育直播作为进阶阅读
添加图片注释，不超过 140 字（可选），这一点在同城约会中也有详细论述
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