js Array.from & Array.of All In One 数组生成器 Array.from The Array.from() static method creates a new, shallow-copied Array instance from an array-like or iterable object. Array.from()静态方法从类似数组或可迭代的对象中创建一个新的,浅复制的Array实例。 Array.from(arrayLike [, mapFn [,...
letobject3={'0':3,'1':13,'2':23,'3':33,};function*createIterator(obj){for(letvalueinobj){yieldobj[value];};};letiterator=createIterator(object3);//console.log(iterator);letarr3=Array.from(iterator);console.log(Array.from(object3))// [3, 13, 23, 33]// 默认情况下,开发者定义...
与异步迭代器的结合就在这里,当有新事件触发时会从 unconsumedPromises 数组里取出第一个元素执行,如果理解异步迭代器实现标准你会发现 PromiseResolve(createIterResult(args, false)) 就是异步迭代器对象 next() 方法返回值的标准定义。
Array.prototype.slice = function(start,end){ var result = new Array(); start = start || 0; end = end || this.length; //this指向调用的对象,当用了call后,能够改变this的指向,也就是指向传进来的对象,这是关键 for(var i = start; i < end; i++){ result.push(this[i]); } return r...
array .from( arguments ) [...arguments] 类数组:表示有长度属性,但是不 包含任何重复的方法,请应用:是更改切片内部的此指向参数,所以arguments也可以调用数组的方法 array 。..是将类细分扩展为字符串,再定义为层叠 2.开始篇 array .prototype.slice = function...
options.customAttribution((string | Array<string>))(default null) String or strings to show in an AttributionControl . Only applicable if options.attributionControl is true . options.doubleClickZoom(boolean)(default true) If true , the "double click to zoom" interaction is enabled (see DoubleCli...
channel) {channel.add(uid, sid);}cb(this.get(name, flag));};/*** Get user from chat channel.** @param {Object} opts parameters for request* @param {String} name channel name* @param {boolean} flag channel parameter* @return {Array} users uids in channel**/ChatRemote.prototype.get...
Powerful, extensible, and feature-packed frontend toolkit. Build and customize with Sass, utilize prebuilt grid system and components, and bring projects to life with powerful JavaScript plugins.
OH_AI_TensorHandleArray OH_NN_Memory OH_NN_QuantParam OH_NN_Tensor OH_NN_UInt32Array OH_AVCodecAsyncCallback OH_AVCodecBufferAttr OH_Huks_Blob OH_Huks_CertChain OH_Huks_KeyInfo OH_Huks_KeyMaterial25519 OH_Huks_KeyMaterialDh OH_Huks_KeyMaterialDsa OH_Huks...
conn.createLob(dmdb.CLOB, function(err, lob) { do_something_with_lob(); }) execute 参数 sql(String):SQL 或 PL/SQL 语句,可包含绑定变量 bindParams(Object):绑定参数,按照名称绑定时,为 JS 对象,按照位置绑定时,为 Array 数组。可配置属性具体如下: ...