JS 数字转换
parseInt 默认转换为8进制数= =、带参数吧...参考：
http://www.cnblogs.com/carekee/articles/1729574.html
parseInt("1234blue");//returns1234 parseInt("0xA");//returns10 parseInt("22.5");//returns22 parseInt("blue");//returnsNaN parseInt("AF",16);//returns175 parseInt("10",2);//returns2 parseInt("10",8);//returns8 parseInt("10",10);//returns10 parseInt("010");//returns8 parseInt("010",8);//returns8 parseInt("010",10);//returns10 parseFloat("1234blue");//returns1234.0 parseFloat("0xA");//returnsNaN parseFloat("22.5");//returns22.5 parseFloat("22.34.5");//returns22.34 parseFloat("0908");//returns908 parseFloat("blue");//returnsNaN
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