Answers:
不需要jQuery,Plain Ol'JS(tm)可以做到,
parseInt(a, 10);
parseInt
函数实际上将忽略附加在整数字符字符串末尾的任何非整数字符。parseInt('234sdfsdf') == 234
很抱歉,但是:
var bar = "16px";
var foo = parseInt(bar, 10); // Doesn't work! Output is always 16px
// and
var foo = Number(s.replace(/px$/, '')); // No more!