1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/**
* Alias for document.getElementById.
* @param {string} id The ID of the element to find.
* @return {HTMLElement} The found element or null if not found.
*/
function $(id) {
return document.getElementById(id);
}
/**
* Extract query params from given search string of an URL.
* @param {string} search The search portion of an URL to extract params.
* @return {Object} The key value pairs of the extracted params.
*/
function getUrlSearchParams(search) {
var params = {};
if (search) {
// Strips leading '?'
search = search.substring(1);
var pairs = search.split('&');
for (var i = 0; i < pairs.length; ++i) {
var pair = pairs[i].split('=');
if (pair.length == 2) {
params[pair[0]] = decodeURIComponent(pair[1]);
} else {
params[pair] = true;
}
}
}
return params;
}
/**
* Creates a new URL which is the old URL with a GET param of key=value.
* Copied from ui/webui/resources/js/util.js.
* @param {string} url The base URL. There is not sanity checking on the URL so
* it must be passed in a proper format.
* @param {string} key The key of the param.
* @param {string} value The value of the param.
* @return {string} The new URL.
*/
function appendParam(url, key, value) {
var param = encodeURIComponent(key) + '=' + encodeURIComponent(value);
if (url.indexOf('?') == -1)
return url + '?' + param;
return url + '&' + param;
}
/**
* Creates a new URL by striping all query parameters.
* @param {string} url The original URL.
* @return {string} The new URL with all query parameters stripped.
*/
function stripParams(url) {
return url.substring(0, url.indexOf('?')) || url;
}
/**
* Extract domain name from an URL.
* @param {string} url An URL string.
* @return {string} The host name of the URL.
*/
function extractDomain(url) {
var a = document.createElement('a');
a.href = url;
return a.hostname;
}
/**
* Extract protocol from an URL.
* @param {string} url An URL string.
* @return {string} The protocol of the URL.
*/
function extractProtocol(url) {
var a = document.createElement('a');
a.href = url;
return a.protocol;
}
|
