Docs: Move to let/const, and clean up.

docs/api/zh/audio/Audio.html

@@ -22,14 +22,14 @@ <h2>代码示例</h2>
 
 		<code>
 		// create an AudioListener and add it to the camera
-		var listener = new THREE.AudioListener();
+		const listener = new THREE.AudioListener();
 		camera.add( listener );
 
 		// create a global audio source
-		var sound = new THREE.Audio( listener );
+		const sound = new THREE.Audio( listener );
 
 		// load a sound and set it as the Audio object's buffer
-		var audioLoader = new THREE.AudioLoader();
+		const audioLoader = new THREE.AudioLoader();
 		audioLoader.load( 'sounds/ambient.ogg', function( buffer ) {
 			sound.setBuffer( buffer );
 			sound.setLoop( true );

docs/api/zh/audio/AudioAnalyser.html

@@ -22,14 +22,14 @@ <h2>代码示例</h2>
 
 		<code>
 		// create an AudioListener and add it to the camera
-		var listener = new THREE.AudioListener();
+		const listener = new THREE.AudioListener();
 		camera.add( listener );
 
 		// create an Audio source
-		var sound = new THREE.Audio( listener );
+		const sound = new THREE.Audio( listener );
 
 		// load a sound and set it as the Audio object's buffer
-		var audioLoader = new THREE.AudioLoader();
+		const audioLoader = new THREE.AudioLoader();
 		audioLoader.load( 'sounds/ambient.ogg', function( buffer ) {
 			sound.setBuffer( buffer );
 			sound.setLoop(true);
@@ -38,10 +38,10 @@ <h2>代码示例</h2>
 		});
 
 		// create an AudioAnalyser, passing in the sound and desired fftSize
-		var analyser = new THREE.AudioAnalyser( sound, 32 );
+		const analyser = new THREE.AudioAnalyser( sound, 32 );
 
 		// get the average frequency of the sound
-		var data = analyser.getAverageFrequency();
+		const data = analyser.getAverageFrequency();
 		</code>
 
 		<h2>例子</h2>

docs/api/zh/audio/AudioListener.html

@@ -22,14 +22,14 @@ <h2>代码示例</h2>
 
 		<code>
 		// create an AudioListener and add it to the camera
-		var listener = new THREE.AudioListener();
+		const listener = new THREE.AudioListener();
 		camera.add( listener );
 
 		// create a global audio source
-		var sound = new THREE.Audio( listener );
+		const sound = new THREE.Audio( listener );
 
 		// load a sound and set it as the Audio object's buffer
-		var audioLoader = new THREE.AudioLoader();
+		const audioLoader = new THREE.AudioLoader();
 		audioLoader.load( 'sounds/ambient.ogg', function( buffer ) {
 			sound.setBuffer( buffer );
 			sound.setLoop(true);

docs/api/zh/audio/PositionalAudio.html

@@ -22,24 +22,24 @@ <h2>代码示例</h2>
 
 		<code>
 		// create an AudioListener and add it to the camera
-		var listener = new THREE.AudioListener();
+		const listener = new THREE.AudioListener();
 		camera.add( listener );
 
 		// create the PositionalAudio object (passing in the listener)
-		var sound = new THREE.PositionalAudio( listener );
+		const sound = new THREE.PositionalAudio( listener );
 
 		// load a sound and set it as the PositionalAudio object's buffer
-		var audioLoader = new THREE.AudioLoader();
+		const audioLoader = new THREE.AudioLoader();
 		audioLoader.load( 'sounds/song.ogg', function( buffer ) {
 			sound.setBuffer( buffer );
 			sound.setRefDistance( 20 );
 			sound.play();
 		});
 
 		// create an object for the sound to play from
-		var sphere = new THREE.SphereBufferGeometry( 20, 32, 16 );
-		var material = new THREE.MeshPhongMaterial( { color: 0xff2200 } );
-		var mesh = new THREE.Mesh( sphere, material );
+		const sphere = new THREE.SphereBufferGeometry( 20, 32, 16 );
+		const material = new THREE.MeshPhongMaterial( { color: 0xff2200 } );
+		const mesh = new THREE.Mesh( sphere, material );
 		scene.add( mesh );
 
 		// finally add the sound to the mesh

docs/api/zh/cameras/CubeCamera.html

@@ -18,15 +18,15 @@ <h2>代码示例</h2>
 
 		<code>
 		// Create cube render target
-		var cubeRenderTarget = new THREE.WebGLCubeRenderTarget( 128, { format: THREE.RGBFormat, generateMipmaps: true, minFilter: THREE.LinearMipmapLinearFilter } );
+		const cubeRenderTarget = new THREE.WebGLCubeRenderTarget( 128, { format: THREE.RGBFormat, generateMipmaps: true, minFilter: THREE.LinearMipmapLinearFilter } );
 
 		// Create cube camera
-		var cubeCamera = new THREE.CubeCamera( 1, 100000, cubeRenderTarget );
+		const cubeCamera = new THREE.CubeCamera( 1, 100000, cubeRenderTarget );
 		scene.add( cubeCamera );
 
 		// Create car
-		var chromeMaterial = new THREE.MeshLambertMaterial( { color: 0xffffff, envMap: cubeRenderTarget.texture } );
-		var car = new Mesh( carGeometry, chromeMaterial );
+		const chromeMaterial = new THREE.MeshLambertMaterial( { color: 0xffffff, envMap: cubeRenderTarget.texture } );
+		const car = new Mesh( carGeometry, chromeMaterial );
 		scene.add( car );
 
 		// Update the render target cube

docs/api/zh/cameras/OrthographicCamera.html

@@ -24,7 +24,7 @@ <h1>正交相机（[name]）</h1>
 		<h2>代码示例</h2>
 
 		<code>
-		var camera = new THREE.OrthographicCamera( width / - 2, width / 2, height / 2, height / - 2, 1, 1000 );
+		const camera = new THREE.OrthographicCamera( width / - 2, width / 2, height / 2, height / - 2, 1, 1000 );
 		scene.add( camera );
 		</code>
 

docs/api/zh/cameras/PerspectiveCamera.html

@@ -22,7 +22,7 @@ <h1>透视相机（[name]）</h1>
 		<h2>代码示例</h2>
 
 		<code>
-		var camera = new THREE.PerspectiveCamera( 45, width / height, 1, 1000 );
+		const camera = new THREE.PerspectiveCamera( 45, width / height, 1, 1000 );
 		scene.add( camera );
 		</code>
 
@@ -154,10 +154,10 @@ <h3>[method:null setViewOffset]( [param:Float fullWidth], [param:Float fullHeigh
 		</pre>
 		那对于每个显示器，你可以这样来设置、调用：<br />
 
-		<code>var w = 1920;
-var h = 1080;
-var fullWidth = w * 3;
-var fullHeight = h * 2;
+		<code>const w = 1920;
+const h = 1080;
+const fullWidth = w * 3;
+const fullHeight = h * 2;
 
 // A
 camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 0, w, h );

docs/api/zh/constants/CustomBlendingEquations.html

@@ -17,7 +17,7 @@ <h1>自定义混合方程常量（Custom Blending Equation Constants）</h1>
 		<h2>代码示例</h2>
 
 		<code>
-		var material = new THREE.MeshBasicMaterial( {color: 0x00ff00} );
+		const material = new THREE.MeshBasicMaterial( {color: 0x00ff00} );
 		material.blending = THREE.CustomBlending;
 		material.blendEquation = THREE.AddEquation; //default
 		material.blendSrc = THREE.SrcAlphaFactor; //default

docs/api/zh/core/BufferGeometry.html

@@ -23,10 +23,10 @@ <h1>[name]</h1>
 
 		<h2>代码示例</h2>
 		<code>
-		var geometry = new THREE.BufferGeometry();
+		const geometry = new THREE.BufferGeometry();
 		// 创建一个简单的矩形. 在这里我们左上和右下顶点被复制了两次。
 		// 因为在两个三角面片里，这两个顶点都需要被用到。
-		var vertices = new Float32Array( [
+		const vertices = new Float32Array( [
 			-1.0, -1.0,  1.0,
 			 1.0, -1.0,  1.0,
 			 1.0,  1.0,  1.0,
@@ -38,8 +38,8 @@ <h2>代码示例</h2>
 
 		// itemSize = 3 因为每个顶点都是一个三元组。
 		geometry.setAttribute( 'position', new THREE.BufferAttribute( vertices, 3 ) );
-		var material = new THREE.MeshBasicMaterial( { color: 0xff0000 } );
-		var mesh = new THREE.Mesh( geometry, material );
+		const material = new THREE.MeshBasicMaterial( { color: 0xff0000 } );
+		const mesh = new THREE.Mesh( geometry, material );
 		</code>
 
 		<h2>例子</h2>

docs/api/zh/core/EventDispatcher.html

@@ -20,23 +20,19 @@ <h2>代码示例</h2>
 		<code>
 		// 为自定义对象添加事件
 
-		var Car = function () {
+		class Car extends EventDispatcher {
 
-			this.start = function () {
+			start() {
 
 				this.dispatchEvent( { type: 'start', message: 'vroom vroom!' } );
 
 			};
 
-		};
-
-		// 将 EventDispatcher.prototype 与自定义对象 prototype 进行混合
-
-		Object.assign( Car.prototype, EventDispatcher.prototype );
+		}
 
 		// 使用自定义对象的事件
 
-		var car = new Car();
+		const car = new Car();
 
 		car.addEventListener( 'start', function ( event ) {
 

docs/api/zh/core/Face3.html

@@ -18,19 +18,19 @@ <h1>[name]</h1>
 		<h2>代码示例</h2>
 
 		<code>
-		var material = new THREE.MeshStandardMaterial( { color : 0x00cc00 } );
+		const material = new THREE.MeshStandardMaterial( { color : 0x00cc00 } );
 
 		// 创建仅有一个三角形面的几何体
-		var geometry = new THREE.Geometry();
+		const geometry = new THREE.Geometry();
 		geometry.vertices.push( new THREE.Vector3( -50, -50, 0 ) );
 		geometry.vertices.push( new THREE.Vector3(  50, -50, 0 ) );
 		geometry.vertices.push( new THREE.Vector3(  50,  50, 0 ) );
 
 		// 利用顶点 0, 1, 2 创建一个面
-		var normal = new THREE.Vector3( 0, 0, 1 ); //optional
-		var color = new THREE.Color( 0xffaa00 ); //optional
-		var materialIndex = 0; //optional
-		var face = new THREE.Face3( 0, 1, 2, normal, color, materialIndex );
+		const normal = new THREE.Vector3( 0, 0, 1 ); //optional
+		const color = new THREE.Color( 0xffaa00 ); //optional
+		const materialIndex = 0; //optional
+		const face = new THREE.Face3( 0, 1, 2, normal, color, materialIndex );
 
 		// 将创建的面添加到几何体的面的队列
 		geometry.faces.push( face );

docs/api/zh/core/Geometry.html

@@ -24,7 +24,7 @@ <h1>[name]</h1>
 		<h2>代码示例</h2>
 
 		<code>
-		var geometry = new THREE.Geometry();
+		const geometry = new THREE.Geometry();
 
 		geometry.vertices.push(
 			new THREE.Vector3( -10,  10, 0 ),

docs/api/zh/core/Raycaster.html

@@ -17,8 +17,8 @@ <h1>光线投射[name]</h1>
 
 		<h2>代码示例</h2>
 		<code>
-		var raycaster = new THREE.Raycaster();
-		var mouse = new THREE.Vector2();
+		const raycaster = new THREE.Raycaster();
+		const mouse = new THREE.Vector2();
 
 		function onMouseMove( event ) {
 
@@ -35,9 +35,9 @@ <h2>代码示例</h2>
 			raycaster.setFromCamera( mouse, camera );
 
 			// 计算物体和射线的焦点
-			var intersects = raycaster.intersectObjects( scene.children );
+			const intersects = raycaster.intersectObjects( scene.children );
 
-			for ( var i = 0; i < intersects.length; i++ ) {
+			for ( let i = 0; i < intersects.length; i ++ ) {
 
 				intersects[ i ].object.material.color.set( 0xff0000 );
 

docs/api/zh/core/Uniform.html

@@ -215,11 +215,11 @@ <h2>Structured Uniforms with Arrays</h2>
 			It's also possible to manage *structs* in arrays. The syntax for this use case looks like so:
 		</p>
 		<code>
-		var entry1 = {
+		const entry1 = {
 			position: new Vector3(),
 			direction: new Vector3( 0, 0, 1 )
 		};
-		var entry2 = {
+		const entry2 = {
 			position: new Vector3( 1, 1, 1 ),
 			direction: new Vector3( 0, 1, 0 )
 		};

docs/api/zh/extras/core/Path.html

@@ -19,18 +19,18 @@ <h1>路径（[name]）</h1>
 		<h2>代码示例</h2>
 
 		<code>
-		var path = new THREE.Path();
+		const path = new THREE.Path();
 
 		path.lineTo( 0, 0.8 );
 		path.quadraticCurveTo( 0, 1, 0.2, 1 );
 		path.lineTo( 1, 1 );
 
-		var points = path.getPoints();
+		const points = path.getPoints();
 
-		var geometry = new THREE.BufferGeometry().setFromPoints( points );
-		var material = new THREE.LineBasicMaterial( { color: 0xffffff } );
+		const geometry = new THREE.BufferGeometry().setFromPoints( points );
+		const material = new THREE.LineBasicMaterial( { color: 0xffffff } );
 
-		var line = new THREE.Line( geometry, material );
+		const line = new THREE.Line( geometry, material );
 		scene.add( line );
 		</code>
 

docs/api/zh/extras/core/Shape.html

@@ -20,7 +20,7 @@ <h1>形状（[name]）</h1>
 		<h2>代码示例</h2>
 
 		<code>
-		var heartShape = new THREE.Shape();
+		const heartShape = new THREE.Shape();
 
 		heartShape.moveTo( 25, 25 );
 		heartShape.bezierCurveTo( 25, 25, 20, 0, 0, 0 );
@@ -30,11 +30,11 @@ <h2>代码示例</h2>
 		heartShape.bezierCurveTo( 80, 35, 80, 0, 50, 0 );
 		heartShape.bezierCurveTo( 35, 0, 25, 25, 25, 25 );
 
-		var extrudeSettings = { amount: 8, bevelEnabled: true, bevelSegments: 2, steps: 2, bevelSize: 1, bevelThickness: 1 };
+		const extrudeSettings = { amount: 8, bevelEnabled: true, bevelSegments: 2, steps: 2, bevelSize: 1, bevelThickness: 1 };
 
-		var geometry = new THREE.ExtrudeBufferGeometry( heartShape, extrudeSettings );
+		const geometry = new THREE.ExtrudeBufferGeometry( heartShape, extrudeSettings );
 
-		var mesh = new THREE.Mesh( geometry, new THREE.MeshPhongMaterial() );
+		const mesh = new THREE.Mesh( geometry, new THREE.MeshPhongMaterial() );
 		</code>
 
 		<h2>例子</h2>

docs/api/zh/extras/curves/CatmullRomCurve3.html

@@ -20,21 +20,21 @@ <h2>代码示例</h2>
 
 		<code>
 		//Create a closed wavey loop
-		var curve = new THREE.CatmullRomCurve3( [
+		const curve = new THREE.CatmullRomCurve3( [
 			new THREE.Vector3( -10, 0, 10 ),
 			new THREE.Vector3( -5, 5, 5 ),
 			new THREE.Vector3( 0, 0, 0 ),
 			new THREE.Vector3( 5, -5, 5 ),
 			new THREE.Vector3( 10, 0, 10 )
 		] );
 
-		var points = curve.getPoints( 50 );
-		var geometry = new THREE.BufferGeometry().setFromPoints( points );
+		const points = curve.getPoints( 50 );
+		const geometry = new THREE.BufferGeometry().setFromPoints( points );
 
-		var material = new THREE.LineBasicMaterial( { color : 0xff0000 } );
+		const material = new THREE.LineBasicMaterial( { color : 0xff0000 } );
 
 		// Create the final object to add to the scene
-		var curveObject = new THREE.Line( geometry, material );
+		const curveObject = new THREE.Line( geometry, material );
 		</code>
 
 		<h2>例子</h2>

docs/api/zh/extras/curves/CubicBezierCurve.html

@@ -21,20 +21,20 @@ <h1>二维三次贝塞尔曲线（[name]）</h1>
 		<h2>代码示例</h2>
 
 		<code>
-		var curve = new THREE.CubicBezierCurve(
+		const curve = new THREE.CubicBezierCurve(
 			new THREE.Vector2( -10, 0 ),
 			new THREE.Vector2( -5, 15 ),
 			new THREE.Vector2( 20, 15 ),
 			new THREE.Vector2( 10, 0 )
 		);
 
-		var points = curve.getPoints( 50 );
-		var geometry = new THREE.BufferGeometry().setFromPoints( points );
+		const points = curve.getPoints( 50 );
+		const geometry = new THREE.BufferGeometry().setFromPoints( points );
 
-		var material = new THREE.LineBasicMaterial( { color : 0xff0000 } );
+		const material = new THREE.LineBasicMaterial( { color : 0xff0000 } );
 
 		// Create the final object to add to the scene
-		var curveObject = new THREE.Line( geometry, material );
+		const curveObject = new THREE.Line( geometry, material );
 		</code>
 
 		<h2>构造函数</h2>