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spcontext.js without jquery
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| /*!spcontext*/ | |
| (function (window, undefined) { | |
| "use strict"; | |
| //var $ = window.jQuery; | |
| var document = window.document; | |
| // SPHostUrl parameter name | |
| var SPHostUrlKey = "SPHostUrl"; | |
| // Gets SPHostUrl from the current URL and appends it as query string to the links which point to current domain in the page. | |
| //$(document).ready(function () { | |
| ensureSPHasRedirectedToSharePointRemoved(); | |
| var spHostUrl = getSPHostUrlFromQueryString(window.location.search); | |
| var currentAuthority = getAuthorityFromUrl(window.location.href).toUpperCase(); | |
| if (spHostUrl && currentAuthority) { | |
| appendSPHostUrlToLinks(spHostUrl, currentAuthority); | |
| } | |
| //}); | |
| // Appends SPHostUrl as query string to all the links which point to current domain. | |
| function appendSPHostUrlToLinks(spHostUrl, currentAuthority) { | |
| //$("a").filter().each(); | |
| var elements = Array.prototype.filter.call(document.querySelectorAll('a'), function (el,i) { | |
| var authority = getAuthorityFromUrl(el.href); | |
| if (!authority && /^#|:/.test(el.href)) { | |
| // Filters out anchors and urls with other unsupported protocols. | |
| return false; | |
| } | |
| return authority.toUpperCase() == currentAuthority; | |
| }); | |
| Array.prototype.forEach.call(elements, function (el, i) { | |
| if (!getSPHostUrlFromQueryString(el.search)) { | |
| if (el.search.length > 0) { | |
| el.search += "&" + SPHostUrlKey + "=" + spHostUrl; | |
| } | |
| else { | |
| el.search = "?" + SPHostUrlKey + "=" + spHostUrl; | |
| } | |
| } | |
| }); | |
| } | |
| // Gets SPHostUrl from the given query string. | |
| function getSPHostUrlFromQueryString(queryString) { | |
| if (queryString) { | |
| if (queryString[0] === "?") { | |
| queryString = queryString.substring(1); | |
| } | |
| var keyValuePairArray = queryString.split("&"); | |
| for (var i = 0; i < keyValuePairArray.length; i++) { | |
| var currentKeyValuePair = keyValuePairArray[i].split("="); | |
| if (currentKeyValuePair.length > 1 && currentKeyValuePair[0] == SPHostUrlKey) { | |
| return currentKeyValuePair[1]; | |
| } | |
| } | |
| } | |
| return null; | |
| } | |
| // Gets authority from the given url when it is an absolute url with http/https protocol or a protocol relative url. | |
| function getAuthorityFromUrl(url) { | |
| if (url) { | |
| var match = /^(?:https:\/\/|http:\/\/|\/\/)([^\/\?#]+)(?:\/|#|$|\?)/i.exec(url); | |
| if (match) { | |
| return match[1]; | |
| } | |
| } | |
| return null; | |
| } | |
| // If SPHasRedirectedToSharePoint exists in the query string, remove it. | |
| // Hence, when user bookmarks the url, SPHasRedirectedToSharePoint will not be included. | |
| // Note that modifying window.location.search will cause an additional request to server. | |
| function ensureSPHasRedirectedToSharePointRemoved() { | |
| var SPHasRedirectedToSharePointParam = "&SPHasRedirectedToSharePoint=1"; | |
| var queryString = window.location.search; | |
| if (queryString.indexOf(SPHasRedirectedToSharePointParam) >= 0) { | |
| window.location.search = queryString.replace(SPHasRedirectedToSharePointParam, ""); | |
| } | |
| } | |
| })(window); |
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