Ruby's Louvre

摘要： 此函数用于处理子元素伪类的表达式: var exprs = [ "3n+2" , "22", " + 1", " - 4 ", "-n", "3n", " odd ", " even " ] var parseNth = function(expr){ expr = expr.replace(/\s/g,''); var a ... 阅读全文