javascript closure interview question

This article mainly analyzes a JS front-end closure interview question, and introduces the knowledge of JS front-end closure in detail from the example. If you are interested, you can refer to it. Problem Code function fun(n,o){ console.log(o); return { fun:function(m){//[2] return fun(m,n);//[1] } }}va

function (whether it is foo () or foo (1) (2) (3) The chain form), and deferred execution. You can accumulate multiple parameters into an array and perform the summation in the last step.The common form of curry: function Curry (FN) { // body ... var args = Array.prototype.slice.call (arguments,1 return function () { // body ... var innerargs = Array.prototype.slice.call ( arguments); var finalargs = Args.concat (Innerargs); Console.log (Finalargs); return

Interview Questions are a topic of great interest to recruitment companies and developers. The company hopes to learn the real level and detailed processing capabilities of developers through this topic, developers want to maximize their own level (or even play exceptionally well ). This article provides a wide range of front-end development interview questions. Both recruiters and applicants are worth read

Analyze the differences between fn () and return fn () in JavaScript with an elegant interview question. In js, other functions are often called in the function. In this case, fn () is called, and return fn () is called, some beginners are often confused by these two methods. Here we use an elegant interview

Question about the javascript prototype chain and scope during the interview Now the school recruitment is almost over, so I have time to summarize the problems encountered during this period. I found a lot of tests on JS scope in many pen-level questions, so I will summarize the materials. As we all know, unlike other OOP languages, js is a weak type language a

Validation methods submitted (compared by a single character):verifydateCommit Validation method (via regular expression)JS with pattern.test (need to verify string) pattern is regular expressionverifydateMethods to validate before committingDOCTYPE HTML>HTML>Head>MetaCharSet= "UTF-8">title>Insert Title heretitle>Head>Body>verifydateformID= "Form1"Action= "Http://www.cnblogs.com/qingyundian"onsubmit= "return Chkform ()"> inputtype= "text"ID= "D1" /> inputtype= "Submit" /> form> Scri

How to use the script to determine the user input string is the following time format 2004-11-21 must ensure that the user input is this format, and is the time, such as the month is not greater than 12 and so on, in addition I need the user to enter two, and the latter one later than the previous night, only allowed to use JavaScript, Please give me a detailed answer,Tip: Use regular expressions to determine the format in advance and then extract the

Closures (closure) are a difficult and unique feature of the JavaScript language, and many advanced applications rely on closure implementations. Very early on the concept of closure, but has been confused, not able to figure out what the JavaScript

Understanding javascript prototype and closure (15)-closure and understanding javascript In addition to understanding the context and scope, we also understand the basics of closures. As for the literal description of the concept of the word "closure", it is really hard to e

implementing object-oriented JavaScript. see the following code 1 var Person = function (name, age, gender) {2 return {3 get_name: function () {4 return name; 5}, 6 set_name: function (value) {7 name = value; 8}, 9 get_age: function () {10 return age; 11}, 12 ge T_gender: function () {13 return gender; 14} 15}; 16}; this code is a function with three parameters, that is, there are three local variables in the function, name, age, and gender, respecti

() ()// Single //the Normal object method returns an anonymous function varperson={name:"Double", GetName:function(){ varthat= This //The variable assigned to that by this object before the anonymous function is defined is about the same as this and arguments, and assigns it to a variable return function() {Console.log (That.name)}}} varName= "single"Person.getname () ()//DoubleOK, after understanding the closu