使用javascript查找并替换唯一的html（href）字符串

Question

Using Javascript, how can I change this classless anchor (assuming targeting unique href string):

<a href="/unique-url-string/"></a>

to this, on page load:

<a href="/replacement-url-string/"></a>

Answer 1

You can select the element based on its href prop.

$('a[href="/unique-url-string/"]').prop('href', '/replacement-url-string/');

If you want to only search the pathname of these urls and keep the domain name the same you can try something like:

$('a').filter(function() {
  return this.pathname === "/foo/bar"
}).prop('href', function () {
  this.pathname = '/butt/butt/butt';
  return this;
});

Answer 2

Try this:

$(function(){
   $('a[href="/unique-url-string/"]').attr('href', '/replacement-url-string/'); 
});

To replace a portion:

$(function(){
    var a = $('a[href="/unique-url-string/"]');
   a.attr('href', a.attr('href').replace('unique', 'replacement')); 
});

Answer 3

Using only JavaScript without library

function replaceLink(oldLink, newLink) {
var x = document.getElementsByTagName("a");
    for(var i = 0; i < x.length; i++)
        if(x[i].href == oldLink) {
            x[i].href == newLink; 
            break; 
        }
    }
}

Answer 4

Just do this :

$().ready(function(){
    $('a').attr("href").replace("unique","replacement");
});

Answer 5

 var link = document.getElementById('linkToChange'); console.log(link.href); link.href = "http://www.google.com"; 

 <a href="about:blank" id="linkToChange">me</a>