Object.values(obj); // [1, 2] 四、Object.getOwnPropertyDescriptors 4.1 返回值 Object.getOwnPropertyDescriptors() 方法用来获取一个对象的所有自身属性的描述符 4.2 语法 Object.getOwnPropertyDescriptors(obj); 4.3 例子 let obj = {a: 1, b:
The Object.prototype property represents the Object prototype object. 这个属性表示了Object这个构造函数的原型对象。 Object.getOwnPropertyDescriptor() Object.getOwnPropertyDescriptor(obj, prop)The Object.getOwnPropertyDescriptor() method returns a property descriptor(返回的是一个对象) for an own property...
//定义一个Object字面量对象,当着Key-value集合使用 var objectMap={}; objectMap[jack]=jack.name; //向对象中添加元素,使用对象作为key objectMap[mark]=mark.name; console.log(objectMap[jack],objectMap[mark]); console.log(objectMap["[object Object]"]); 输出结果如图5-5所示: 图5-5 Object作...
All of the preceding functions have a parameter whose type is object. In addition to the data returned by each API, another common property named errMsg is returned. The value format of this property is as follows: For a successful call:xxx:ok, where xxx is the name of the API being ca...
// Insert a row by sparse Array (assign to columns A, E & I) var rowValues = []; rowValues[1] = 4; rowValues[5] = 'Kyle'; rowValues[9] = new Date(); // insert new row and return as row object const insertedRow = worksheet.insertRow(1, rowValues); // Insert a row, ...
example.com/"); doing so will cause the virtual console to emit a "jsdomError" explaining that this feature is not implemented, and nothing will change: there will be no new Window or Document object, and the existing window's location object will still have all the same property values....
除了Object类型之外,Array类型恐怕是js中最常用的类型了,并且随着js的发展进步,数组中提供的方法也越来越来,对数组的处理也出现了各种骚操作。 如果对js原型/原型链不了解的可以移步_深入了解javascript原型/原型链,_下面我们就来一起学习下js的数组。
axios.get('/user/12345', { validateStatus: function (status) { return status < 500; // Resolve only if the status code is less than 500 } }) Using toJSON you get an object with more information about the HTTP error. axios.get('/user/12345') .catch(function (error) { console.log...
options(Object):语句执行的选项,为 JS 对象。可配置属性具体如下: callback(Function):执行完 executeMany 后的回调函数。参数如下: 下面通过一个简单的例子来说明 executeMany 用法。 conn.executeMany( "insert into PERSON values(:1, :2, :3)",
getJSON('//example.com/awesome.json?callback=?', function(remoteData){ console.log(remoteData) }) $.param $.param(object, [shallow]) ⇒ string $.param(array) ⇒ string 序列化一个对象,在Ajax请求中提交的数据使用URL编码的查询字符串表示形式。如果shallow设置为true。嵌套对象不会被序列化...