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Sets or retrieves the subsection of the href property that follows the number sign (#).

Property of dom/Locationdom/Location


var hash = location.hash;
location.hash = hash;

Return Value

Returns an object of type StringString

The hash component of the URL.


This example function returns true if the current document URL has a hash value, or false if the document URL does not.

function hasHash() {
    if (document.location.hash === "") {
        return false;
    return true;


If there is no number sign, this property returns an empty string. This property is useful for moving to a bookmark within a document. Assigning an invalid value does not cause an error.