<!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="X-UA-Compatible" content="IE=Edge"/> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <title aria-live="polite">Research Support and Library Services Home - Yale University Library Research Guides at Yale University</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <meta name="robots" content="noarchive" /><link rel="shortcut icon" type="image/ico" href="https://library.yale.edu/sites/all/themes/yalenew_base/images/favicon.ico"/><meta property="og:title" content="Yale University Library Research Guides"> <meta property="og:description" content=" "><meta property="og:type" content="website"> <meta property="og:url" content="https://guides.library.yale.edu/"> <meta name="twitter:card" content="summary_large_image"> <meta name="twitter:site" content="@springshare"><link rel="stylesheet" href="https://static-assets-us.libguides.com/web/jquery/css/jquery-ui.min.css?2691" /><link rel="stylesheet" href="https://netdna.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css"/> <link rel="stylesheet" href="https://static-assets-us.libguides.com/web/css3.13.2/lg-public.min.css" /> <script type="text/javascript" src="https://static-assets-us.libguides.com/web/jquery/js/1.12.4_jquery.min.js"></script> <script src="//code.jquery.com/ui/1.13.2/jquery-ui.min.js"></script> <script> jQuery.ui || document.write('<script src="https://static-assets-us.libguides.com/web/jquery/js/jquery-ui.min.js?2691">\x3C/script>'); 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"&group_id=" + config.group_id : ""), type: "GET", dataType: "json", success: function(response, textStatus, jqXHR) { if ( response.errCode == 200 ) { var count_type = springSpace.publicObj.getCountType(config.action); jQuery.each( response.data, function(idx, elt) { jQuery("#s-lg-index-" + count_type + "-" + elt.id).show(); jQuery("#s-lg-index-" + count_type + "-count-" + elt.id).html(elt.count); } ); } else { springSpace.UI.notify({mode: "custom", msg: "Error loading guide counts."}); } }, error: function (jqXHR, textStatus, errorThrown) { springSpace.UI.notify({mode: "custom", msg: "Error loading guide counts."}); } }); } var button_data = {"code":"g"}; springSpace.homepage = { default_list_order: "a", current_list: 170, current_btn_id: "s-lg-index-all-btn", current_num_cols: 1, current_type_label: "", current_button_code: button_data.code, group_id: 6119, historyEdited: false, initPushState: function() { if (window.history && history.pushState) { jQuery(window).bind("popstate", function(e) { // Don't reload list if this is the result of a skip link hash update. if ( springSpace.homepage.historyEdited ) { // location.search will return URL encoded values which will end up causing double-encoding when jQuery sends the loadAzList request. var button_code = springSpace.Util.getQSParam({name: "b", qs: location.search}); var guide_display_code = springSpace.Util.getQSParam({name: "d", qs: location.search}); // If there is no button code, go back to the default button if (button_code === "") { button_code = "g"; } springSpace.publicObj.loadHomepageList({ nav: "back", action: springSpace.homepage.mapQSIdToActionId(button_code), group_id: springSpace.homepage.group_id, order: springSpace.homepage.mapQSIdToGuideSortId(guide_display_code), num_cols: 1, elt_id: "s-lg-index-list", button_id: springSpace.homepage.mapQSIdToButtonEltId(button_code), type_label: "Guides", display_sort: ( springSpace.homepage.mapQSIdToButtonEltId(button_code) === "s-lg-index-all-btn") }); } }); } }, mapQSIdToButtonEltId: function(qs_id) { var button_ids = { "g": "s-lg-index-all-btn", "s": "s-lg-index-subject-btn", "t": "s-lg-index-guidetype-btn", "o": "s-lg-index-owner-btn", "p": "s-lg-index-group-btn", }; springSpace.Util.setObjProp(qs_id, "", button_ids); return button_ids[qs_id]; }, mapQSIdToActionId: function(qs_id) { var button_ids = { "g": "170", "s": "172", "t": "173", "o": "174", "p": "171", }; springSpace.Util.setObjProp(qs_id, "", button_ids); return button_ids[qs_id]; }, mapButtonEltIdToQSId: function(btn_elt_id) { var button_ids = { "s-lg-index-all-btn": "g", "s-lg-index-subject-btn": "s", "s-lg-index-guidetype-btn": "t", "s-lg-index-owner-btn": "o", "s-lg-index-group-btn": "p", }; springSpace.Util.setObjProp(btn_elt_id, "", button_ids); return button_ids[btn_elt_id]; }, mapQSIdToGuideSortId: function(qs_id) { var sort_ids = { "a": "0", "r": "2", "p": "3" }; springSpace.Util.setObjProp(qs_id, "", sort_ids); return sort_ids[qs_id]; }, mapGuideSortIdToQSId: function(sort_id) { var sort_ids = { "0": "a", "2": "r", "3": "p" }; springSpace.Util.setObjProp(sort_id, "", sort_ids); return sort_ids[sort_id]; }, processPushState: function(config) { if (history.pushState) { // Only call pushState if this is a call to navigate forward (link, etc.), not back or initial load. if ( config.nav !== "back" && config.nav !== "init" ) { // Only add display code to URL if on the guides button. var qs_config = ( springSpace.homepage.current_button_code === "g" ? { button_code: springSpace.homepage.current_button_code, guide_display_code: springSpace.homepage.default_list_order } : { button_code: springSpace.homepage.current_button_code } ); var url = location.pathname + springSpace.homepage.buildQS(qs_config); history.pushState({}, null, url); } } // Set flag to indicate history has been updated. springSpace.homepage.historyEdited = true; }, buildQS: function(config) { var params = { b: springSpace.Util.setProp(config.button_code, ""), d: springSpace.Util.setProp(config.guide_display_code, "") }; // If on the default button, do not add the code if (params.b === "g") { return ""; } // Add group_id to query string if supplied. if (springSpace.homepage.group_id) { params.group_id = springSpace.homepage.group_id; } var qs_params = []; jQuery.each(params, function(idx, val) { if ( val !== "" && val !== "0") { qs_params.push(idx + "=" + encodeURIComponent(val)); } }); return ( qs_params.length == 0 ? "" : "?" + qs_params.join("&") ); } }; jQuery(function() { // Initialize pushState handling. springSpace.homepage.initPushState(); // Clear out the search term from previous search/back button. jQuery("#s-lg-guide-search").val(""); // Load guide list. springSpace.publicObj.loadHomepageList({ action: springSpace.homepage.current_list, group_id: "6119", order: springSpace.homepage.mapQSIdToGuideSortId(springSpace.homepage.default_list_order), num_cols: 1, elt_id: "s-lg-index-list", button_id: springSpace.homepage.current_btn_id, type_label: "Guides", display_sort: ( springSpace.homepage.current_btn_id === "s-lg-index-all-btn"), nav: "init" }); // Select default dropdown option. jQuery("#s-lg-guide-order > option[value=" + springSpace.homepage.mapQSIdToGuideSortId(springSpace.homepage.default_list_order) + "]").prop("selected",true); // Load guide type counts. springSpace.publicObj.loadGuideCounts({ action: 176, site_id: 12, group_id: 6119 }); // Load group guides counts. 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