想使用<input type="file" accept="image/*" />，如何判断Safari版本？

Question

我的手机版本是7.1.2，看不了safari的版本，我想知道有什么代码是可以实现检测Safari版本的，打印了navigator.userAgent.toLowerCase()发现居然和PC版chrome是一样的。。。。。。就是数字有些差异，这咋判断啊

我想使用<input type="file" accept="image/" />，可是拍照之后上传是白图，同事的6s是可以上传图片的，在网上找<input type="file" accept="image/" />的资料显示Safari6以上就可以支持，我不知道我是什么版本

Answer 1

手机浏览器的useragent字符串里一定是包含了手机本身的特征码的，不可能和Pc一样，除非你在Pc浏览器里开启了手机模拟器，或者强行指定了与手机完全一样的useragent，否则如果是缺省设置的话不可能一样。以下是各手机的useragent：

●iOS
Mozilla/5.0 (iPhone; U; CPU like Mac OS X; en) AppleWebKit/420+ (KHTML, like Gecko) Version/3.0 Mobile/1C28 Safari/419.3

●iOS2
Mozilla/5.0 (iPhone; U; CPU iPhone OS 2_0 like Mac OS X; ja-jp) AppleWebKit/525.18.1 (KHTML, like Gecko) Version/3.1.1 Mobile/5A347 Safari/52
Mozilla/5.0 (iPhone; U; CPU iPhone OS 2_0 like Mac OS X; ja-jp) AppleWebKit/525.18.1 (KHTML, like Gecko) Version/3.1.1 Mobile/5A345 Safari/525.20
Mozilla/5.0 (iPhone; U; CPU iPhone OS 2_0_1 like Mac OS X; ja-jp) AppleWebKit/525.18.1 (KHTML, like Gecko) Version/3.1.1 Mobile/5B108 Safari/525.20
Mozilla/5.0 (iPhone; U; CPU iPhone OS 2_1 like Mac OS X; ja-jp) AppleWebKit/525.18.1 (KHTML, like Gecko) Version/3.1.1 Mobile/5F136 Safari/525.20

●iOS3
Mozilla/5.0 (iPhone; U; CPU iPhone OS 3_0 like Mac OS X; en-us) AppleWebKit/528.18 (KHTML, like Gecko) Version/4.0 Mobile/7A341 Safari/528.16
Mozilla/5.0 (iPhone; U; CPU iPhone OS 3_1_3 like Mac OS X; ja-jp) AppleWebKit/528.18 (KHTML, like Gecko) Version/4.0 Mobile/7E18 Safari/528.16

●iOS4
Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_0_1 like Mac OS X; ja-jp) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8A306 Safari/6531.22.7
Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_0_2 like Mac OS X; ja-jp) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8A400 Safari/6531.22.7
Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_1 like Mac OS X; ja-jp) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8B117 Safari/6531.22.7
Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_2_1 like Mac OS X; ja-jp) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5
Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3 like Mac OS X; ja-jp) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8F190 Safari/6533.18.5
Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_1 like Mac OS X; ja-jp) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8G4 Safari/6533.18.5
Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_2 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8H7 Safari/6533.18.5
Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_3 like Mac OS X; ja-jp) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5
Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_4 like Mac OS X; ja-jp) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8K2 Safari/6533.18.5
Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_5 like Mac OS X; ja-jp) AppleWebKit/533.17.9 (KHTML, like Gecko) Mobile/8L1

●iOS5
Mozilla/5.0 (iPhone; U; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Mobile/9A334 Safari/7534.48.3
Mozilla/5.0 (iPhone; CPU iPhone OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Mobile/9A405 Safari/7534.48.3
Mozilla/5.0 (iPhone; CPU iPhone OS 5_1_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9B206 Safari/7534.48.3

●iOS6
Mozilla/5.0 (iPhone; CPU iPhone OS 6_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A403 Safari/8536.25