https://blog.youkuaiyun.com/fightingboyws/article/details/79688057
主要是父找子,直接找。$('#sonFrame').contents().find("#sonId")
子找父,前加window.parent
https://blog.youkuaiyun.com/fightingboyws/article/details/79688057
主要是父找子,直接找。$('#sonFrame').contents().find("#sonId")
子找父,前加window.parent