Can we retrieve the URL of the previous page from the history object? I've seen references to history.previous, but it appears to be either undefined or protected based on my observations.
Can we retrieve the URL of the previous page from the history object? I've seen references to history.previous, but it appears to be either undefined or protected based on my observations.
To retrieve the previous webpage visited, you can access it using the document.referrer property instead of the history object. However, keep in mind that there is no universal method to achieve this as support for different properties may vary across browsers.
Accessing browser history is a serious security violation as it would allow anyone to view the browsing history of users.
It may be possible to create a Browser Helper Object for IE and other browsers that provides access to browser history, similar to the google toolbar. However, this would require user permission to run on their machine.
There are unethical methods to access browser history, but these should not be pursued. For more information, check out this link.
As many have mentioned, it's generally not possible to track browser history. However, I've come up with a workaround by saving each page visited in the localStorage. This way, you can create your own browsing history...
function writeMyBrowserHistory(historyLength=3) {
// Store last historyLength page paths for use in other pages
var pagesArr = localStorage.myPageHistory
if (pagesArr===null) {
pagesArr = [];
} else {
pagesArr = JSON.parse(localStorage.myPageHistory);
pagesArr.push(window.location.pathname) // can use whichever part, but full URL needs encoding
}
if (pagesArr.length>historyLength) {
// truncate the array
pagesArr = pagesArr.slice(pagesArr.length-historyLength,pagesArr.length)
}
// store it back
localStorage.myPageHistory = JSON.stringify(pagesArr);
// optional debug
console.log(`my page history = ${pagesArr}`)
}
function getLastMyBrowserHistoryUrl() {
var pagesArr = localStorage.myPageHistory
var url = ""
if (pagesArr!==null) {
pagesArr = JSON.parse(localStorage.myPageHistory);
// pop off the most recent URL
url = pagesArr.pop()
}
return url
}
Simply include the following JavaScript on every page:
writeMyBrowserHistory()
To retrieve the last page visited:
var lastPageUrl = getLastMyBrowserHistoryUrl()
Keep in mind that localStorage can only store strings, hence the need for JSON parsing.
If you spot any issues in the code, feel free to let me know as I've formatted it for clarity from the original version.
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