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Some understanding of continuous bind: First paste the handwritten bind implementation you understand, and refer to the understanding of some bosses: Function.prototype.myBind = function(asThis, ...arg) { let _this = this; if (typeof _this !== 'function') { throw new Error('not a function'); } let newFn = function() { console.log('Pri ...

preface: This is a keyword in JavaScript. It is an object automatically generated inside the function body when the function runs. It can only be used inside the function body. In addition, this cannot be assigned during execution. Text: Default binding: Usually, in the case of separate or pure function calls, this points to the global ob ...

preface js has flexible this direction and various usage scenarios. Although the concept is basic, it is very important. Many hidden bug s come from it. It is very necessary to understand the direction of this. If you can master this skillfully, the code will be more concise and elegant Who does this point to? There is a most popular saying ...

Usage and differences of call, apply and bind 1. Interaction Change the direction of this 2. Differences The difference between call and apply: the methods of accepting parameters are different. call receives multiple parameters Function.call(obj,[param1[,param2[,...[,paramN]]]]) apply receives an array list Function.ap ...

Q: what are the ways to change this point? Three (I know) call, apply, bind (not including es6 syntax explanation) When I reviewed these methods, I read a lot of blogs and discussions. The first two are well understood, but I took a little time to adapt to the customization of bind! Without much to say, start exploring: ...

Sorting based on Vue official style guide   1, Coercion 1. The component name is multiple words The component name should always be multiple words, except for the root component App. Positive example: export default { name: 'TodoItem', // ... } Copy code Counterexample: export default ...