1// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5function $(id) { 6 return document.getElementById(id); 7} 8 9function getUrlSearchParams(search) { 10 var params = {}; 11 12 if (search) { 13 // Strips leading '?' 14 search = search.substring(1); 15 var pairs = search.split('&'); 16 for (var i = 0; i < pairs.length; ++i) { 17 var pair = pairs[i].split('='); 18 if (pair.length == 2) { 19 params[pair[0]] = decodeURIComponent(pair[1]); 20 } else { 21 params[pair] = true; 22 } 23 } 24 } 25 26 return params; 27} 28 29/** 30 * Creates a new URL which is the old URL with a GET param of key=value. 31 * Copied from ui/webui/resources/js/util.js. 32 * @param {string} url The base URL. There is not sanity checking on the URL so 33 * it must be passed in a proper format. 34 * @param {string} key The key of the param. 35 * @param {string} value The value of the param. 36 * @return {string} The new URL. 37 */ 38function appendParam(url, key, value) { 39 var param = encodeURIComponent(key) + '=' + encodeURIComponent(value); 40 41 if (url.indexOf('?') == -1) 42 return url + '?' + param; 43 return url + '&' + param; 44} 45 46/** 47 * Creates a new URL by striping all query parameters. 48 * @param {string} url The original URL. 49 * @return {string} The new URL with all query parameters stripped. 50 */ 51function stripParams(url) { 52 return url.substring(0, url.indexOf('?')) || url; 53} 54