diff --git a/docs/Commands.js b/docs/Commands.js
index ff21d4b..5d9ae19 100644
--- a/docs/Commands.js
+++ b/docs/Commands.js
@@ -940,7 +940,7 @@ function commandDRAW(args) {
 		const wx = sx >= dx ? sx - dx : dx - sx, wy = sy >= dy ? sy - dy : dy - sy;
 		const xmode = wx >= wy;
 		let x = sx, y = sy, gosa = 0;
-		while (x != dx || y != dy) {
+		while (x !== dx || y !== dy) {
 			drawPoint(x, y);
 			if (xmode) {
 				if (sx < dx) x++; else x--;
diff --git a/docs/Compiler.js b/docs/Compiler.js
index 4adcf1e..fb87f8d 100644
--- a/docs/Compiler.js
+++ b/docs/Compiler.js
@@ -419,20 +419,20 @@ const basicFunctions = {
 };
 
 const expr7_ops = {
-	"OR" : function(a, b) { return a != 0 || b != 0 ? 1 : 0; },
-	"||" : function(a, b) { return a != 0 || b != 0 ? 1 : 0; }
+	"OR" : function(a, b) { return a !== 0 || b !== 0 ? 1 : 0; },
+	"||" : function(a, b) { return a !== 0 || b !== 0 ? 1 : 0; }
 };
 
 const expr6_ops = {
-	"AND": function(a, b) { return a != 0 && b != 0 ? 1 : 0; },
-	"&&" : function(a, b) { return a != 0 && b != 0 ? 1 : 0; }
+	"AND": function(a, b) { return a !== 0 && b !== 0 ? 1 : 0; },
+	"&&" : function(a, b) { return a !== 0 && b !== 0 ? 1 : 0; }
 };
 
 const expr5_ops = {
-	"="  : function(a, b) { return a == b ? 1 : 0; },
-	"==" : function(a, b) { return a == b ? 1 : 0; },
-	"<>" : function(a, b) { return a != b ? 1 : 0; },
-	"!=" : function(a, b) { return a != b ? 1 : 0; },
+	"="  : function(a, b) { return a === b ? 1 : 0; },
+	"==" : function(a, b) { return a === b ? 1 : 0; },
+	"<>" : function(a, b) { return a !== b ? 1 : 0; },
+	"!=" : function(a, b) { return a !== b ? 1 : 0; },
 	"<"  : function(a, b) { return a < b ? 1 : 0; },
 	">"  : function(a, b) { return a > b ? 1 : 0; },
 	"<=" : function(a, b) { return a <= b ? 1 : 0; },
@@ -448,15 +448,15 @@ const expr4_ops = {
 const expr3_ops = {
 	"*"  : function(a, b) { return arithWrap(a * b); },
 	"/"  : function(a, b) {
-		if (b == 0) throw "Divide by 0";
+		if (b === 0) throw "Divide by 0";
 		return arithWrap(a / b);
 	},
 	"%"  : function(a, b) {
-		if (b == 0) throw "Divide by 0";
+		if (b === 0) throw "Divide by 0";
 		return arithWrap(a % b);
 	},
 	"MOD": function(a, b) {
-		if (b == 0) throw "Divide by 0";
+		if (b === 0) throw "Divide by 0";
 		return arithWrap(a % b);
 	},
 	"<<" : function(a, b) { return (b & 0xff) >= 16 ? 0 : arithWrap(a << (b & 15)); },
@@ -468,8 +468,8 @@ const expr3_ops = {
 const expr2_ops = {
 	"-"  : function(a) { return arithWrap(-a); },
 	"~"  : function(a) { return arithWrap(~a); },
-	"!"  : function(a) { return a == 0 ? 1 : 0; },
-	"NOT": function(a) { return a == 0 ? 1 : 0; }
+	"!"  : function(a) { return a === 0 ? 1 : 0; },
+	"NOT": function(a) { return a === 0 ? 1 : 0; }
 };
 
 const basicConstants = {
@@ -977,7 +977,7 @@ var compiler = (function() {
 					if (nstr.charAt(0) === "#") {
 						nstr = nstr.substr(1);
 						delta = 16;
-					} else if (nstr.charAt(0) == "`") {
+					} else if (nstr.charAt(0) === "`") {
 						nstr = nstr.substr(1);
 						delta = 2;
 					}
diff --git a/docs/Functions.js b/docs/Functions.js
index 71693ca..c176163 100644
--- a/docs/Functions.js
+++ b/docs/Functions.js
@@ -384,7 +384,7 @@ function functionLEN(args) {
 	let ptr = args[0];
 	for (;;) {
 		const c = readVirtualMem(ptr + count);
-		if (c == 0 || c == 0x22) return count;
+		if (c === 0 || c === 0x22) return count;
 		count++;
 	}
 }
diff --git a/docs/OneFiveCrowd.js b/docs/OneFiveCrowd.js
index 2e6168c..69020c1 100644
--- a/docs/OneFiveCrowd.js
+++ b/docs/OneFiveCrowd.js
@@ -1393,7 +1393,7 @@ function keyDown(key, shiftKey, ctrlKey, altKey) {
 			else if (0x77 <= keyCode && keyCode <= 0x7a) keyCode += 0x80 - 0x77;
 			else if (keyCode === 0x7e) keyCode = 0x40;
 		}
-		if (shiftKey && keyCode == 0x20) keyCode = 0x0e;
+		if (shiftKey && keyCode === 0x20) keyCode = 0x0e;
 		keyRomanInput(keyCode);
 	} else if (!altKey) {
 		if (key === "Enter") {
@@ -1446,7 +1446,7 @@ function keyUp(key) {
 	else if (key === "ArrowUp") btnStatus &= ~4;
 	else if (key === "ArrowDown") btnStatus &= ~8;
 	else if (key === " ") btnStatus &= ~0x10;
-	else if (key === "x" || key == "X") btnStatus &= ~0x20;
+	else if (key === "x" || key === "X") btnStatus &= ~0x20;
 	ramBytes[BTN_ADDR] = btnStatus;
 }
 
@@ -1514,7 +1514,7 @@ function putChar(c, isInsert = false) {
 	if (cursorX < 0 || SCREEN_WIDTH <= cursorX || cursorY < 0 || SCREEN_HEIGHT <= cursorY) return;
 	switch (c) {
 	case 0x08: // Backspace
-		if (cursorX > 0 || (cursorY > 0 && vramView[cursorY * SCREEN_WIDTH - 1] != 0)) {
+		if (cursorX > 0 || (cursorY > 0 && vramView[cursorY * SCREEN_WIDTH - 1] !== 0)) {
 			const limit = SCREEN_HEIGHT * SCREEN_WIDTH - 1;
 			const start = cursorY * SCREEN_WIDTH + cursorX - 1;
 			let stop;
@@ -1732,7 +1732,7 @@ function putChar(c, isInsert = false) {
 				for (; start > 0 && vramView[start - 1] !== 0; start--);
 			}
 			for (; stop < limit && vramView[stop] !== 0; stop++);
-			if (start == stop) break;
+			if (start === stop) break;
 			for (let i = start; i < stop; i++) {
 				vramView[i] = 0;
 			}
@@ -1917,7 +1917,7 @@ function editProgram(lineno, str) {
 	}
 	// 必要に応じてデータを移動する
 	let newLastPos = lastPos;
-	if (replaceSize != addSize) {
+	if (replaceSize !== addSize) {
 		const moveSrc = replacePos + replaceSize;
 		const moveDest = replacePos + addSize;
 		const moveSize = lastPos - moveSrc;
diff --git a/docs/VirtualMixJuice.js b/docs/VirtualMixJuice.js
index 2e572eb..5ebf603 100644
--- a/docs/VirtualMixJuice.js
+++ b/docs/VirtualMixJuice.js
@@ -209,7 +209,7 @@ const virtualMixJuice = (function() {
 	function rx(data, dataBps) {
 		if (!uartConnected || dataBps !== deviceBps) return;
 		for (let i = 0; i < data.length; i++) {
-			if (data[i] == 0x0A) {
+			if (data[i] === 0x0A) {
 				enqueueLine(lineBuffer);
 				lineBuffer = "";
 			} else {