摘要: ``` $x("string-length(//h3[@class='t'])") 8 $x("string(//h3[@class='t'])") "XPath 教程" $x("round(//h3[@class='t'])") NaN $x("number(//h3[@class='t'])") NaN $x("not(//h3[@class='t'])") false $x("no 阅读全文
posted @ 2018-11-12 17:20 公众号python学习开发 阅读(271) 评论(0) 推荐(0) 编辑