apply:将函数绑定到某个对象,apply()不会创建一个函数,函数体内的this对象的值会被绑定到传入apply()中的第一个参数的值,例如:f.apply(obj),实际上可以理解为obj.f(),这时f函数体内的this指向的是obj; call:将函数绑定到某个对象,call()不会创建一个函数,函数体内的this对象的值会被绑定到传入call()中的...
// 先看lodash中的flatten_.flatten([1,[2,[3,[4]],5]])// 得到结果为 [1, 2, [3, [4]], 5]// vue中functionsimpleNormalizeChildren(children){for(vari=0;i<children.length;i++){if(Array.isArray(children[i])){returnArray.prototype.concat.apply([],children)}}returnchildren}// es6...
这句话有两个关键词:数据绑定和视图组件。 Vue的数据驱动:数据改变驱动了视图的自动更新,传统的做法你得手动改变DOM来改变视图,vuejs只需要改变数据,就会自动改变视图,一个字:爽。再也不用你去操心DOM的更新了,这就是MVVM思想的实现。 视图组件化:把整一个网页的拆分成一个个区块,每个区块我们可以看作成一个组...
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vue中apply如何使this指向vue ” 的推荐: 如何使Vue组件功能可重用? 可以创建一个Vue3可组合程序,允许在其他地方重用该功能。 棘手的部分是vue-router。我们必须确保composable中使用的路由器实际上与应用程序/组件中使用的路由器实例相同。我们不能使用useRouter(),这是在组件的设置函数中使用路由器的方法(在我们...
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You can apply it to your programs, too. When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive ...
2.call ,apply都只能继承父级,并不能深度继承 3.因为深度继承需要递归或者多层嵌套函数,代码量大且难维护,因此推荐下方方法 1.防暴点(preventReClick) 问题:快速点击按钮时会频繁重复调用接口,为了防止这种情况,要对相应的按钮进行防暴力重复点击处理,最好是使用函数防抖或者函数截流来处理,但是现在已经要修改的按钮...
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