摘要：
名称 parseInt(a,10); //Before Math.floor(a); //Before a>>0; //Before ~~a; //After a|0; //After Math.round(a); //Beforenum.toFixed(0) undefined; //Before 阅读全文
摘要：
https://www.cnblogs.com/y896926473/articles/9675819.html 阅读全文