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How do I parse a URL into hostname and path in javascript?

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南方客
南方客 2020-11-21 22:38

I would like to take a string

var a = \"http://example.com/aa/bb/\"

and process it into an object such that

a.hostname == \
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22条回答
  • 余生分开走
    2020-11-21 23:26

    freddiefujiwara's answer is pretty good but I also needed to support relative URLs within Internet Explorer. I came up with the following solution:

    function getLocation(href) {
    var location = document.createElement("a");
    location.href = href;
    // IE doesn't populate all link properties when setting .href with a relative URL,
    // however .href will return an absolute URL which then can be used on itself
    // to populate these additional fields.
    if (location.host == "") {
      location.href = location.href;
    }
    return location;
};

    Now use it to get the needed properties:

    var a = getLocation('http://example.com/aa/bb/');
document.write(a.hostname);
document.write(a.pathname);

    Example:

    function getLocation(href) {
  var location = document.createElement("a");
  location.href = href;
  // IE doesn't populate all link properties when setting .href with a relative URL,
  // however .href will return an absolute URL which then can be used on itself
  // to populate these additional fields.
  if (location.host == "") {
    location.href = location.href;
  }
  return location;
};
var urlToParse = 'http://example.com/aa/bb/',
  a = getLocation(urlToParse);
document.write('Absolute URL: ' + urlToParse);
document.write('<br />');
document.write('Hostname: ' + a.hostname);
document.write('<br />');
document.write('Pathname: ' + a.pathname);

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  • 长情又很酷
    2020-11-21 23:28

    Stop reinventing the wheel. Use https://github.com/medialize/URI.js/

    var uri = new URI("http://example.org:80/foo/hello.html");
// get host
uri.host(); // returns string "example.org:80"
// set host
uri.host("example.org:80");
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  • 离开以前
    2020-11-21 23:29 
    function parseUrl(url) {
    var m = url.match(/^(([^:\/?#]+:)?(?:\/\/((?:([^\/?#:]*):([^\/?#:]*)@)?([^\/?#:]*)(?::([^\/?#:]*))?)))?([^?#]*)(\?[^#]*)?(#.*)?$/),
        r = {
            hash: m[10] || "",                   // #asd
            host: m[3] || "",                    // localhost:257
            hostname: m[6] || "",                // localhost
            href: m[0] || "",                    // http://username:password@localhost:257/deploy/?asd=asd#asd
            origin: m[1] || "",                  // http://username:password@localhost:257
            pathname: m[8] || (m[1] ? "/" : ""), // /deploy/
            port: m[7] || "",                    // 257
            protocol: m[2] || "",                // http:
            search: m[9] || "",                  // ?asd=asd
            username: m[4] || "",                // username
            password: m[5] || ""                 // password
        };
    if (r.protocol.length == 2) {
        r.protocol = "file:///" + r.protocol.toUpperCase();
        r.origin = r.protocol + "//" + r.host;
    }
    r.href = r.origin + r.pathname + r.search + r.hash;
    return r;
};
parseUrl("http://username:password@localhost:257/deploy/?asd=asd#asd");

    It works with both absolute and relative urls

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  • 借酒劲吻你
    2020-11-21 23:30

    The AngularJS way - fiddle here: http://jsfiddle.net/PT5BG/4/

    <!DOCTYPE html>
<html>
<head>
    <title>Parse URL using AngularJS</title>
</head>
<body ng-app ng-controller="AppCtrl" ng-init="init()">

<h3>Parse URL using AngularJS</h3>

url: <input type="text" ng-model="url" value="" style="width:780px;">

<ul>
    <li>href = {{parser.href}}</li>
    <li>protocol = {{parser.protocol}}</li>
    <li>host = {{parser.host}}</li>
    <li>hostname = {{parser.hostname}}</li>
    <li>port = {{parser.port}}</li>
    <li>pathname = {{parser.pathname}}</li>
    <li>hash = {{parser.hash}}</li>
    <li>search = {{parser.search}}</li>
</ul>

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.6/angular.min.js"></script>

<script>
function AppCtrl($scope) {

    $scope.$watch('url', function() {
        $scope.parser.href = $scope.url;
    });

    $scope.init = function() {
        $scope.parser = document.createElement('a');
        $scope.url = window.location;
    }

}
</script>

</body>
</html>
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