2021-05-09 00:20:15

asset/docsify-quick-page.js

@@ -0,0 +1,42 @@
+document.addEventListener('DOMContentLoaded', function() {	
+	var prevBtn = document.createElement("div")
+	prevBtn.id = "prev-page-button"
+	document.body.appendChild(prevBtn)
+	var nextBtn = document.createElement("div");
+	nextBtn.id = "next-page-button"
+    document.body.appendChild(nextBtn)
+
+    var links = null
+	var linkMap = null
+	var getCurIdx = function() {
+		if (!links) {
+			links = Array
+				.from(document.querySelectorAll(".sidebar-nav a"))
+				.map(x => x.href)
+			linkMap = {}
+			links.forEach((x, i) => linkMap[x] = i)
+		}
+		
+		var elem = document.querySelector(".active a")
+		var curIdx = elem? linkMap[elem.href]: -1
+		return curIdx
+	}
+
+	prevBtn.addEventListener('click', function () {
+		if (!document.body.classList.contains('ready'))
+			return
+		var curIdx = getCurIdx()
+		location.href = curIdx == -1? 
+			links[0]: 
+			links[(curIdx - 1 + links.length) % links.length]
+		document.body.scrollIntoView()
+	}, false)
+	
+	nextBtn.addEventListener('click', function () {
+		if (!document.body.classList.contains('ready'))
+			return
+		var curIdx = getCurIdx()
+		location.href = links[(curIdx + 1) % links.length]
+		document.body.scrollIntoView()
+	}, false)
+})