window.history.back（）但仅当不会将用户带离当前站点时

Question

标题说得很好。即我需要调用它来将用户带到他们所在的先前位置，但只有当它不会将他们带离我们的网站时。

EG

mysite.com/#/foo - > 
mysite.com/#/bar - > 
back is triggered - >
user ends back to mysite.com/#/foo

好像用户直接去的地方

mysite.com/#/bar - > 
back is triggered - >
user is back to whatever site they were first in. 

Answer 1

您可以使用简单的功能：

function returnBack(){

    // If last visited page before this page is in your domain
    if(document.referrer.indexOf(window.location.host) >= 0)
    {
        window.history.back()
    }
    else {
        // If last page is not in your domain, do your logic here..
    }

}