?? ?? a = "8px"?? ???? ????.
??? ???? ??? ????? ????. ??? ???? ??? a.substring(0,a.indexOf(")? ???? ????. p")). ??? a.substring(0,-2);? ????? ??? ????? substring ????? ??? ? ? ??? ? ???? a.substring(0,a.indexOf( "p")) ? ? ???? ??? ??? ????
8
0
0
ringa_lee
var a="88px";
??? ???? ? ?? ??? ????? ??? ???? ???. ??? ??? ? ????.
parseInt(a);//88
? ??? ?? ??? ??? ??? ? ????: a.substring(0,a.length-2)
? ??? ?? ???? ??? ? ????: var a='8px';a.replace(/px$/ig,'' )
![[? ?????] Node.js ?? ??](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
