assets/js: <details> 标签已经被主流浏览器支持，移除 polyfill

1 files changed, 0 insertions, 194 deletions

diff --git a/assets/js/details-element-polyfill.js b/assets/js/details-element-polyfill.js
deleted file mode 100644
index b651dfc..0000000
--- a/assets/js/details-element-polyfill.js
+++ /dev/null
@@ -1,194 +0,0 @@
-/*
-Details Element Polyfill 2.4.0
-Copyright © 2019 Javan Makhmali
- */
-(function() {
-    "use strict";
-    var element = document.createElement("details");
-    var elementIsNative = typeof HTMLDetailsElement != "undefined" && element instanceof HTMLDetailsElement;
-    var support = {
-      open: "open" in element || elementIsNative,
-      toggle: "ontoggle" in element
-    };
-    var styles = '\ndetails, summary {\n  display: block;\n}\ndetails:not([open]) > *:not(summary) {\n  display: none;\n}\nsummary::before {\n  content: "►";\n  padding-right: 0.3rem;\n  font-size: 0.6rem;\n  cursor: default;\n}\n[open] > summary::before {\n  content: "▼";\n}\n';
-    var _ref = [], forEach = _ref.forEach, slice = _ref.slice;
-    if (!support.open) {
-      polyfillStyles();
-      polyfillProperties();
-      polyfillToggle();
-      polyfillAccessibility();
-    }
-    if (support.open && !support.toggle) {
-      polyfillToggleEvent();
-    }
-    function polyfillStyles() {
-      document.head.insertAdjacentHTML("afterbegin", "<style>" + styles + "</style>");
-    }
-    function polyfillProperties() {
-      var prototype = document.createElement("details").constructor.prototype;
-      var setAttribute = prototype.setAttribute, removeAttribute = prototype.removeAttribute;
-      var open = Object.getOwnPropertyDescriptor(prototype, "open");
-      Object.defineProperties(prototype, {
-        open: {
-          get: function get() {
-            if (this.tagName == "DETAILS") {
-              return this.hasAttribute("open");
-            } else {
-              if (open && open.get) {
-                return open.get.call(this);
-              }
-            }
-          },
-          set: function set(value) {
-            if (this.tagName == "DETAILS") {
-              return value ? this.setAttribute("open", "") : this.removeAttribute("open");
-            } else {
-              if (open && open.set) {
-                return open.set.call(this, value);
-              }
-            }
-          }
-        },
-        setAttribute: {
-          value: function value(name, _value) {
-            var _this = this;
-            var call = function call() {
-              return setAttribute.call(_this, name, _value);
-            };
-            if (name == "open" && this.tagName == "DETAILS") {
-              var wasOpen = this.hasAttribute("open");
-              var result = call();
-              if (!wasOpen) {
-                var summary = this.querySelector("summary");
-                if (summary) summary.setAttribute("aria-expanded", true);
-                triggerToggle(this);
-              }
-              return result;
-            }
-            return call();
-          }
-        },
-        removeAttribute: {
-          value: function value(name) {
-            var _this2 = this;
-            var call = function call() {
-              return removeAttribute.call(_this2, name);
-            };
-            if (name == "open" && this.tagName == "DETAILS") {
-              var wasOpen = this.hasAttribute("open");
-              var result = call();
-              if (wasOpen) {
-                var summary = this.querySelector("summary");
-                if (summary) summary.setAttribute("aria-expanded", false);
-                triggerToggle(this);
-              }
-              return result;
-            }
-            return call();
-          }
-        }
-      });
-    }
-    function polyfillToggle() {
-      onTogglingTrigger(function(element) {
-        element.hasAttribute("open") ? element.removeAttribute("open") : element.setAttribute("open", "");
-      });
-    }
-    function polyfillToggleEvent() {
-      if (window.MutationObserver) {
-        new MutationObserver(function(mutations) {
-          forEach.call(mutations, function(mutation) {
-            var target = mutation.target, attributeName = mutation.attributeName;
-            if (target.tagName == "DETAILS" && attributeName == "open") {
-              triggerToggle(target);
-            }
-          });
-        }).observe(document.documentElement, {
-          attributes: true,
-          subtree: true
-        });
-      } else {
-        onTogglingTrigger(function(element) {
-          var wasOpen = element.getAttribute("open");
-          setTimeout(function() {
-            var isOpen = element.getAttribute("open");
-            if (wasOpen != isOpen) {
-              triggerToggle(element);
-            }
-          }, 1);
-        });
-      }
-    }
-    function polyfillAccessibility() {
-      setAccessibilityAttributes(document);
-      if (window.MutationObserver) {
-        new MutationObserver(function(mutations) {
-          forEach.call(mutations, function(mutation) {
-            forEach.call(mutation.addedNodes, setAccessibilityAttributes);
-          });
-        }).observe(document.documentElement, {
-          subtree: true,
-          childList: true
-        });
-      } else {
-        document.addEventListener("DOMNodeInserted", function(event) {
-          setAccessibilityAttributes(event.target);
-        });
-      }
-    }
-    function setAccessibilityAttributes(root) {
-      findElementsWithTagName(root, "SUMMARY").forEach(function(summary) {
-        var details = findClosestElementWithTagName(summary, "DETAILS");
-        summary.setAttribute("aria-expanded", details.hasAttribute("open"));
-        if (!summary.hasAttribute("tabindex")) summary.setAttribute("tabindex", "0");
-        if (!summary.hasAttribute("role")) summary.setAttribute("role", "button");
-      });
-    }
-    function eventIsSignificant(event) {
-      return !(event.defaultPrevented || event.ctrlKey || event.metaKey || event.shiftKey || event.target.isContentEditable);
-    }
-    function onTogglingTrigger(callback) {
-      addEventListener("click", function(event) {
-        if (eventIsSignificant(event)) {
-          if (event.which <= 1) {
-            var element = findClosestElementWithTagName(event.target, "SUMMARY");
-            if (element && element.parentNode && element.parentNode.tagName == "DETAILS") {
-              callback(element.parentNode);
-            }
-          }
-        }
-      }, false);
-      addEventListener("keydown", function(event) {
-        if (eventIsSignificant(event)) {
-          if (event.keyCode == 13 || event.keyCode == 32) {
-            var element = findClosestElementWithTagName(event.target, "SUMMARY");
-            if (element && element.parentNode && element.parentNode.tagName == "DETAILS") {
-              callback(element.parentNode);
-              event.preventDefault();
-            }
-          }
-        }
-      }, false);
-    }
-    function triggerToggle(element) {
-      var event = document.createEvent("Event");
-      event.initEvent("toggle", false, false);
-      element.dispatchEvent(event);
-    }
-    function findElementsWithTagName(root, tagName) {
-      return (root.tagName == tagName ? [ root ] : []).concat(typeof root.getElementsByTagName == "function" ? slice.call(root.getElementsByTagName(tagName)) : []);
-    }
-    function findClosestElementWithTagName(element, tagName) {
-      if (typeof element.closest == "function") {
-        return element.closest(tagName);
-      } else {
-        while (element) {
-          if (element.tagName == tagName) {
-            return element;
-          } else {
-            element = element.parentNode;
-          }
-        }
-      }
-    }
-  })();
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