How to force a page to reload if all what was chan

问题:

I am trying to reload current page with different url hash, but it doesn't work as expected.

(Clarification how I want it to work: Reload the page and then scroll to the new hash.)

Approach #1:

window.location.hash = "#" + newhash;

Only scrolls to this anchor without reloading the page.

Approach #2:

window.location.hash = "#" + newhash;
window.location.reload(true);

Kinda works but it first scrolls to the anchor, then reloads the page, then scrolls to the anchor again.

Approach #3:

window.location.href = window.location.pathname + window.location.search + "&random=" + Math.round(Math.random()*100000) + "#" + newhash;

Works but I would rather not add random garbage to the url.

Is there a better solution?

回答1:

Remove the anchor you're going to navigate to, then use approach #2? Since there's no anchor, setting the hash shouldn't scroll the page.

回答2:

I had a JQuery function that fired on $(document).ready() which detected if there was a hash appended to the URL in my case, so I kept that function the same and then just used a force reload whenever a hash change was detected:

$(window).on('hashchange',function(){ 
    window.location.reload(true); 
});

Then my other function -

$(document).ready(function() {
    var hash = window.location.hash;    
    if(hash) {
           //DO STUFF I WANT TO DO WITH HASHES
    }
});

In my case, it was fine for UX -- might not be good for others.

回答3:

It should be expected that #foo will scroll to the anchor of the id, "foo". If you want to use approach #1 and have it reload, this approach might work.

if (Object.defineProperty && Object.getOwnPropertyDescriptor) { // ES5
    var hashDescriptor = Object.getOwnPropertyDescriptor(location, "hash"),
    hashSetter = hashDescriptor.set;
    hashDescriptor.set = function (hash) {
        hashSetter.call(location, hash);
        location.reload(true);
    };
    Object.defineProperty(location, "hash", hashDescriptor);
} else if (location.__lookupSetter__ && location.__defineSetter__) { // JS
    var hashSetter = location.__lookupSetter__("hash");
    location.__defineSetter__("hash", function (hash) {
        hashSetter.call(location, hash);
        location.reload(true)
    });
}

回答4:

Another option is to remove the hash and store it in session storage to be retrieved on reload:

var newUrl = location.href + '#myHash';
var splitUrl = newUrl.split('#');
newUrl = splitUrl[0];
if (splitUrl[1]){
    sessionStorage.savedHash = splitUrl[1];
}
location.href = newUrl;

and then on top of your page you can have the following code:

var savedHash = sessionStorage.savedHash;
if (savedHash){
    delete sessionStorage.savedHash;
    location.hash = savedHash;
}