* Replaces matches for pattern in string with replacement. * * Note: This method is based on String#replace. * * @

* Joins a room. You can join multiple rooms, and by default, on connection, * you join a room with the same name as your ID * @param name The na

* Splits string by separator. * * Note: This method is based on String#split. * * @param string * @param

* Applies an array of patch instructions to an object

* Produces a random number between min and max (inclusive). If only one argument is provided a number between * 0 and the given number is ret

* 开始创建一个路径，需要调用fill或者stroke才会使用路径进行填充或描边。 * 同一个路径内的多次 `setFillStyle`、`setStrokeStyle`、`setLineWidth` 等设置，以最后一次设置为准。

* Gets the number of milliseconds that have elapsed since the Unix epoch (1 January 1970 00:00:00 UTC). * * @return The number of mi

* 对当前路径进行描边

* Calculates n rounded down to precision. * * @param n The number to round down. * @param precision The precision to round

* API接口调用返回JSON格式内容 * @param {Number} code * @param {String} message * @param {Objext} data

* Creates a new array concatenating `array` with any additional arrays * and/or values. * * @static * @memberOf _

* 表示一组动画完成，可以在一组动画中调用任意多个动画方法，一组动画中的所有动画会同时开始，一组动画完成后才会进行下一组动画。

把路径移动到画布中的指定点，不创建线条。 * @param x 目标位置的x坐标 * @param y 目标位置的y坐标

* 在当前位置添加一个新点，然后在画布中创建从该点到最后指定点的路径。 * @param x 目标位置的x坐标 * @param y 目标位置的y坐标

* The GET method means retrieve whatever information (in the form of an entity) * is identified by the Request-URI. If the Request-URI refers

* Assigns own enumerable properties of source objects to the destination * object. Source objects are applied from left to right. Subsequent

* Checks if value is classified as an Array object. * @param value The value to check. * * @return Returns true if value is

* Emits an event to the default Namespace * @param event The event that we want to emit * @param args Any number of optional arguments to pass w

* 导出动画数据传递给组件的animation属性

* 设置纯色描边 * @param color 设置为填充样式的颜色('rgb(255, 0, 0)'或'rgba(255, 0, 0, 0.6)'或'#ff0000'格式的颜色字符串)

* @see _.assignIn

* @param {number} a The number to test. * @param {number} min The minimum value in the range, inclusive. * @param {number} max The maximum value

`Promise.resolve` returns a promise that will become resolved with the passed `value`. It is shorthand for the following: ```javascript let pro

* The POST method is used to request that the origin server accept the entity * enclosed in the request as a new subordinate of the resource

Use .parse() to do the same thing as treating optimist as a function

* 对当前路径进行填充

* 添加一个矩形路径到当前路径。 * @param x 矩形路径左上角的x坐标 * @param y 矩形路径左上角的y坐标 * @param width 矩形路径的宽度 * @param height 矩形路径的高度

* 设置线条的宽度。 * @param lineWidth 线条的宽度

* Checks if value is classified as a String primitive or object. * * @param value The value to check. * @return Returns tru

* Sets `value` to `key` of the cache. * @param key The key of the value to cache. * @param value The value to cache. * @ret

* 设置纯色填充。 * @param color 设置为填充样式的颜色('rgb(255, 0, 0)'或'rgba(255, 0, 0, 0.6)'或'#ff0000'格式的颜色字符串)

* 一个参数时，表示在X轴、Y轴同时缩放sx倍数；两个参数时表示在X轴缩放sx倍数，在Y轴缩放sy倍数

* 关闭一个路径

* deg的范围-180~180，从原点顺时针旋转一个deg角度

* 添加一个弧形路径到当前路径，顺时针绘制。 * @param x 矩形路径左上角的x坐标 * @param y 矩形路径左上角的y坐标 * @param radius 矩形路径的宽度 * @param startAngle 起始弧度 * @param sweepAng

* Removes leading and trailing whitespace or specified characters from string. * * @param string The string to trim. * @par

* Creates an object that inherits from the given prototype object. If a properties object is provided its own * enumerable properties are ass

* Gets the last element of array. * * @param array The array to query. * @return Returns the last element of array.

* 保存当前坐标轴的缩放、旋转、平移信息

* Constructs a promise for an immediate reference, passes promises through, or * coerces promises from different systems. * @param value immediate r

* Checks if value is classified as a Function object. * * @param value The value to check. * @return Returns true if value

* Checks if value is the language type of Object. (e.g. arrays, functions, objects, regexes, new Number(0), * and new String('')) *

* @param {boolean} fatal If true, decoding errors raise an exception. * @param {number=} opt_code_point Override the standard fallback code point.

* The opposite of _.filter; this method returns the elements of collection that predicate does not return * truthy for. * *

* Calculates n rounded to precision. * * @param n The number to round. * @param precision The precision to round to.

* 验证是否包含某个值

* @see _.forEach

* 获取当前 `context` 上存储的绘图动作

`Promise.reject` returns a promise rejected with the passed `reason`. It is shorthand for the following: ```javascript let promise = new Promis

* Performs a [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero) * comparison between two values to determine if

* 设置字体的字号。 * @param fontSize 字体的字号

* 一个参数时，表示在X轴偏移tx，单位px；两个参数时，表示在X轴偏移tx，在Y轴偏移ty，单位px。

* 在画布上绘制被填充的文本。 * @param text 在画布上输出的文本 * @param x 绘制文本的左上角x坐标位置 * @param y 绘制文本的左上角y坐标位置