正确用法
"pages/user/user.html".replaceAll('/','e');
"pageseusereuser.html"
"pages/user/user.html".replaceAll('/','_');
"pages_user_user.html"
错误用法
"pages/user/user.html".replaceAll('//','_'); xx
console.log(titles2[0].url.replaceAll('/','_').split('.')[0]); vv
