diff --git a/demo/demo2.html b/demo/demo2.html
index c3358d3..9768fa4 100755
--- a/demo/demo2.html
+++ b/demo/demo2.html
@@ -161,7 +161,7 @@ window.addEventListener("load", () => {
 	var apiPath = "https://live2d.fghrsh.net/api", state = 0,
 		modelId = localStorage.getItem("modelId"),
 		modelTexturesId = localStorage.getItem("modelTexturesId");
-	if (modelId == null) {
+	if (modelId === null) {
 		modelId = 1;
 		modelTexturesId = 53;
 	}
@@ -223,24 +223,24 @@ window.addEventListener("load", () => {
 	}
 
 	document.getElementById("handle").addEventListener("click", () => {
-		if (state == 1) {
+		if (state === 1) {
 			state = 2;
 			coverPosition("80%");
 		}
-		else if (state == 2) {
+		else if (state === 2) {
 			state = 1;
 			coverPosition("20%");
 		}
 	});
 
 	document.querySelector("input[type=password]").addEventListener("focus", () => {
-		if (state == 2) {
+		if (state === 2) {
 			state = 1;
 			coverPosition("20%");
 		}
 	});
 	document.querySelector("input[type=password]").addEventListener("blur", () => {
-		if (state == 1) {
+		if (state === 1) {
 			state = 2;
 			coverPosition("80%");
 		}
diff --git a/waifu-tips.js b/waifu-tips.js
index 50825da..d2c3165 100755
--- a/waifu-tips.js
+++ b/waifu-tips.js
@@ -90,10 +90,10 @@ function loadWidget(config) {
 		} else if (document.referrer !== "") {
 			var referrer = new URL(document.referrer),
 				domain = referrer.hostname.split(".")[1];
-			if (location.hostname == referrer.hostname) text = `欢迎阅读<span>「${document.title.split(" - ")[0]}」</span>`;
-			else if (domain == "baidu") text = `Hello！来自 百度搜索 的朋友<br>你是搜索 <span>${referrer.search.split("&wd=")[1].split("&")[0]}</span> 找到的我吗？`;
-			else if (domain == "so") text = `Hello！来自 360搜索 的朋友<br>你是搜索 <span>${referrer.search.split("&q=")[1].split("&")[0]}</span> 找到的我吗？`;
-			else if (domain == "google") text = `Hello！来自 谷歌搜索 的朋友<br>欢迎阅读<span>「${document.title.split(" - ")[0]}」</span>`;
+			if (location.hostname === referrer.hostname) text = `欢迎阅读<span>「${document.title.split(" - ")[0]}」</span>`;
+			else if (domain === "baidu") text = `Hello！来自 百度搜索 的朋友<br>你是搜索 <span>${referrer.search.split("&wd=")[1].split("&")[0]}</span> 找到的我吗？`;
+			else if (domain === "so") text = `Hello！来自 360搜索 的朋友<br>你是搜索 <span>${referrer.search.split("&q=")[1].split("&")[0]}</span> 找到的我吗？`;
+			else if (domain === "google") text = `Hello！来自 谷歌搜索 的朋友<br>欢迎阅读<span>「${document.title.split(" - ")[0]}」</span>`;
 			else text = `Hello！来自 <span>${referrer.hostname}</span> 的朋友`;
 		} else {
 			text = `欢迎阅读<span>「${document.title.split(" - ")[0]}」</span>`;
@@ -157,7 +157,7 @@ function loadWidget(config) {
 	(function initModel() {
 		var modelId = localStorage.getItem("modelId"),
 			modelTexturesId = localStorage.getItem("modelTexturesId");
-		if (modelId == null) {
+		if (modelId === null) {
 			// 首次访问加载 指定模型 的 指定材质
 			var modelId = 1, // 模型 ID
 				modelTexturesId = 53; // 材质 ID
@@ -229,7 +229,7 @@ function loadWidget(config) {
 			fetch(`${apiPath}rand_textures/?id=${modelId}-${modelTexturesId}`)
 				.then(response => response.json())
 				.then(result => {
-					if (result.textures.id == 1 && (modelTexturesId == 1 || modelTexturesId == 0)) showMessage("我还没有其他衣服呢！", 4000, 10);
+					if (result.textures.id === 1 && (modelTexturesId === 1 || modelTexturesId === 0)) showMessage("我还没有其他衣服呢！", 4000, 10);
 					else loadModel(modelId, result.textures.id, "我的新衣服好看嘛？");
 				});
 		}