Comments (82)
XiaoLuo01
commented on May 3, 2024
100
打印 20 :
var b = 10;
(function (){
b = 20;
console.log(b);
})();打印 10:
var b = 10;
(function (){
console.log(b);
b = 20;
})();from daily-interview-question.
IWANABETHATGUY
commented on May 3, 2024
75
干脆一块改造了
var b = 10;
console.log(b);
(function b() {
var b = 20;
console.log(b);
})();from daily-interview-question.
shizhenbin
commented on May 3, 2024
60
console.log(10);
console.log(20);
from daily-interview-question.
jackchenl
commented on May 3, 2024
19
var b = 10;
(function b(){
var b = 20; //or let b = 20;
console.log(this.b);
console.log(b);
})();from daily-interview-question.
commented on May 3, 2024
15
from daily-interview-question.
jjeejj
commented on May 3, 2024
12
打印20
第一种方法：
var b = 10;
(function a(){
b = 20;
console.log(b);
})();第二种方法：
var b = 10;
(function b(){
let b = 20;
console.log(b);
})();对于该方法，按照昨天的解答 ， b 不是无法修改的，但是现在修改成功了
第三种方法：
var b = 10;
(function (){
b = 20;
console.log(b);
})();打印10
var b = 10;
(function b(b){
console.log(b);
b = 20;
})(b);from daily-interview-question.
ligoudan1
commented on May 3, 2024
7
打印20和10:
var b = 10;
(function b(b){
b = 20;
console.log(b);
})(b);
console.log(b);
from daily-interview-question.
qewqewzzz
commented on May 3, 2024
7
var b = 10;
(function b(b){
console.log(b);
b = 20;
console.log(b);
})(b);
from daily-interview-question.
chenchangyuan
commented on May 3, 2024
6
打印10
var b = 10;
(function b(){
b = 20;
console.log(window.b);//10
})();
打印20
var b = 10;
(function b(){
var b = 20;
console.log(b);//20
})();
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HeartYangj
commented on May 3, 2024
6
var b = 10;
(function b(b) {
console.log(b);
b = 20;
console.log(b);
})(b);
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chenshiai
commented on May 3, 2024
5
console.log(10,20)
应题目要求，不考虑出题者的意图，第一反应是这个（手动滑稽）
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dorseysen
commented on May 3, 2024
3
var b = 10;
(function b(b){
console.log(window.b);
b = 20;
console.log(b);
})();
from daily-interview-question.
DangoSky
commented on May 3, 2024
2
var b = 10; (function b(){ b = 20; console.log(b); })();我的解法：
1）打印10var b = 10; (function b(b) { window.b = 20; console.log(b) })(b)或者
var b = 10; (function b(b) { b.b = 20; console.log(b) })(b)2）打印20
var b = 10; (function b(b) { b = 20; console.log(b) })(b)或
var b = 10; (function b() { var b = 20; console.log(b) })()麻烦问一下，打印10的第一种方法和打印20的第一种方法有什么不同，为什么输出的结果不一样？按照我的理解，打印20的第一种方法，函数里的b就是window.b,为什么输出结果不一样？
打印10的第一种方法：b已经作为参数被传进函数里去了，即使函数内使用 window.b = 20;改变了全局的b也已经对它没有影响了，所以会打印出原先的10。
打印20的第一种方法：函数里的b并不是全局的b，修改它也不会影响到全局的b。
你可能没有注意到一点，基本数据类型的传递只是传递数值，比如此处不管你修改的是函数外的b还是函数内的b都不会对对方造成影响。对象的传递才是按引用传递，一个变了全部都要变，可以了解一下js里关于基本数据类型和引用数据类型内存空间的存储方式。
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zhw2590582
commented on May 3, 2024
2
这题目问得不是很严谨
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icedJuice
commented on May 3, 2024
2
同时打出 10 跟 20
var b = 10;
(function (c){
b = 20;
console.log(b);
console.log(c);
})(b);
只打出10
var b = 10;
(function (){
c = 20;
console.log(b);
})();
只打20
var b = 10;
(function (){
b = 20;
console.log(b);
})();
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jackchang2015
commented on May 3, 2024
2
//打印10
var b = 10;
(function (){
console.log(b);
})();
//
var b = 10;
(function b(){
b = 20;
console.log(this.b);
})();
//打印20
var b = 10;
(function (){
b = 20;
console.log(b);
})();
//
var b = 10;
(function b(){
let b = 20;
console.log(b);
})();from daily-interview-question.
bran-nie
commented on May 3, 2024
1
var a = 10;
(function a() {
var a = 20
console.log(a)
})();
console.log(a);
// 20
// 10在立即执行函数表达式里，对a进行var声明，是重新声明了一个变量
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DangoSky
commented on May 3, 2024
1
var b = 10;
(function b(){
console.log(window.b); // 打印10
var b = 20;
console.log(b); // 打印20
})();
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yu910709
commented on May 3, 2024
1
打印10
var b = 10; (function b(){ b = 20; console.log(window.b);//10 })();打印20
var b = 10; (function b(){ var b = 20; console.log(b);//20 })();
找到一个答案一样的，又没说不能改打印体😂
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Abiel1024
commented on May 3, 2024
1
var b = 10;
(function b(){
b = 20;
console.log(this.b);
})();
// 10
var b = 10;
(function b(){
let b = 20;
console.log(b);
})();
// 20
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blly5
commented on May 3, 2024
1
var b = 10;
(function b(){
let b = 20;
console.log(self.b, b);
})();
//10、20
应该算比较少了吧😐
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srrgithub
commented on May 3, 2024
1
只改动一处。
10：
var b = 10;
(function b(){
b = 20;
console.log(10);
})();
20：
var b = 10;
(function b(){
b = 20;
console.log(20);
})();
没错我就是来搞笑的
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icedJuice
commented on May 3, 2024
1
console.log(10)
console.log(20)
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Hideer
commented on May 3, 2024
1
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cMYour
commented on May 3, 2024
1
// 10
var b = 10;
(function b(){
b = 20;
// 此时的 this 指向 window 即：全局变量
console.log(this.b);
})();
// 20
var b = 10;
(function b(){
this.b = 20;
console.log(this.b);
})();from daily-interview-question.
zengkaiz
commented on May 3, 2024
1
// 打印20
var b = 10;
(()=>{
b = 20
console.log(b)
})()
// 打印20
var b = 10;
(function b(b){
b = 20;
console.log(b);
})();
// 打印20
var b = 10;
(function b(){
var b = 20;
console.log(b);
})();
// 打印10
var b = 10;
(function b(b){
window.b = 20;
console.log(b);
})(b);from daily-interview-question.
LoveFreedom97
commented on May 3, 2024
1
Emmmm
var b = 10;
(function(){
console.log(b)
b=20;
console.log(b)
})()
from daily-interview-question.
lsczy
commented on May 3, 2024
1
var b = 10;
(function b(b) {
b = 20;
console.log(window.b) // 10
console.log(b) // 20
})(b)
from daily-interview-question.
LaoLeo
commented on May 3, 2024
// 打印20
var b = 10;
(function b(b){
b = 20;
console.log(b);
})(b);
var b = 10;
(function (){
b = 20;
console.log(b);
})();
// 打印10
var b = 10;
(function b(){
b = 20;
console.log(this.b);
})();
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y1324
commented on May 3, 2024
同时打印10 和20
var b = 10;
(function b() {
let b = 20;
console.log(b)
})(b);
console.log(b);
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huanglvming
commented on May 3, 2024
var b = 10; (function b(){ b = 20; console.log(b); })();我的解法：
1）打印10var b = 10; (function b(b) { window.b = 20; console.log(b) })(b)或者
var b = 10; (function b(b) { b.b = 20; console.log(b) })(b)2）打印20
var b = 10; (function b(b) { b = 20; console.log(b) })(b)或
var b = 10; (function b() { var b = 20; console.log(b) })()
麻烦问一下，打印10的第一种方法和打印20的第一种方法有什么不同，为什么输出的结果不一样？按照我的理解，打印20的第一种方法，函数里的b就是window.b,为什么输出结果不一样？
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y1324
commented on May 3, 2024
var b = 10 ; ( function b (){ b = 20 ; console . log (b); })();我的解法：
1）打印10var b = 10 ; ( function b ( b ) { window . b = 20 ; console . log (b) })(b)或者
var b = 10 ; ( function b ( b ) { b . b = 20 ; console . log (b) })(b)2）打印20
var b = 10 ; ( function b ( b ) { b = 20 ; console . log (b) })(b)或
var b = 10 ; ( function b () { var b = 20 ; console . log (b) })()麻烦问一下，打印10的第一种方法和打印20的第一种方法有什么不同，为什么输出的结果不一样？按照我的理解，打印20的第一种方法，函数里的b就是window.b,为什么输出结果不一样？
两个作用域不同，所以打印的不一样，第一个是外层的b，window上的。20的第一个打印的函数里面的，b只是在作用于函数里面。
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mengfei-nie
commented on May 3, 2024
不是很理解 这个自执行函数里面的 变量被重新赋值后 为啥还是输出之前的变量值函数
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jjeejj
commented on May 3, 2024
console.log(10);
console.log(20);
你是来搞笑的吗？？？？？？ 😅
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hmmoshang
commented on May 3, 2024
打印10
var b = 10;
(function b(){
b = 20;
console.log(window.b);
})();
打印20
(function (){
b = 20;
console.log(b);
})();
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frjcxy
commented on May 3, 2024
console.log(10);
console.log(20);你是来搞笑的吗？？？？？？ 😅兄台厉害
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pangqiang
commented on May 3, 2024
var b = 10;
(function b(b){
console.log(b)
b = 20;
console.log(b);
})(b);
from daily-interview-question.
yu910709
commented on May 3, 2024
不是很理解 这个自执行函数里面的 变量被重新赋值后 为啥还是输出之前的变量值函数
看第33题
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qinnnn
commented on May 3, 2024
var b = 10;
(function b(){
var b = 20;
console.log(this.b);
console.log(b);
})();from daily-interview-question.
kevinlorry
commented on May 3, 2024
我写一下我的理解和解法吧（既然改写应该还是要在原来题目上最小改动）
var b = 10;
(function b(){
var b = 20;
console.log(b);
})();
var b = 10;
(function b(){
b = 20;
console.log(window.b);
})();
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witsaint
commented on May 3, 2024
既然能够简单修改代码
打印20
var b = 10; (function(){ b = 20; console.log(b); })();
打印10
var b = 10; (function(){ console.log(b); })();
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kerrysheng
commented on May 3, 2024
这题太主观了，我可以一行不留的方式改造吗，🌹🐔
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mongonice
commented on May 3, 2024
打印出10
var b = 10;
(function b(a) {
b = 20
console.log(a)
})(b)打印出 20
var b = 10;
(function b(b) {
b = 20
console.log(b)
})()from daily-interview-question.
liuchuandai
commented on May 3, 2024
console.log(10);
console.log(20);
我寻思着 这也改的不多啊
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cheny-github
commented on May 3, 2024
var b = 10;
(function b(b){
console.log(b)
b = 20;
console.log(b);
})(b);
from daily-interview-question.
houchaowei
commented on May 3, 2024
看到好多都是先打印10，再打印20，题都理解错了，题目写的是分别打印10和20，是执行一次，打印两个数
var b = 10;
(function b(b) {
window.b = 20;
console.log(window.b);
console.log(b);
})(b);
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bruser
commented on May 3, 2024
有没有大神解释一下原理啊，很多修改跟直接写
console.log(10); console.log(20);
没什么区别
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mouzhengjie
commented on May 3, 2024
使用箭头函数也可实现:
打印10:
var b = 10;
( (b)=>{
this.b = 20;
console.log(b)
})(b);
打印20:
var b = 10;
( ()=>{
b = 20;
console.log(b)
})();
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Croash
commented on May 3, 2024
var b = 10;
(function b(b) {
console.log(b);b = 20;
console.log(b)
})(b)
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rzh11111111
commented on May 3, 2024
var b = 10;
(function b() {
b = 20;
})(console.log(b))
//10 2333333(卖萌)
var b = 10;
(function b(b) {
b = 20;
console.log(b)
})()
//20
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webbobola
commented on May 3, 2024
// 20
var b = 10;
(function b(){
var b = 20;
console.log(b);
})();
//10
var b = 10;
(function b(){
b = 20;
console.log(this.b);
})();
from daily-interview-question.
tal007
commented on May 3, 2024
打印10
var b = 10;
(function b(){
b = 20;
console.log(window.b);
})();
打印10
var b = 10;
(function (){
b = 20;
console.log(b);
})();
from daily-interview-question.
zhangyu0218
commented on May 3, 2024
这个简单改造好像小时候玩的火柴拼公式。
------------------- 20 -------------------
var b = 10;
(function () {
b = 20;
console.log(b)
})()
------------------- 10 -------------------
var b = 10;
(function () {
b => 20;
console.log(b)
})()
不知道符不符合 哈哈～～
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RimyZhang
commented on May 3, 2024
var b = 10; (function b() { var b = 20; console.log(this.b); // 10 console.log(b); // 20 })();
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JohnieXu
commented on May 3, 2024
- 打印10
var b = 10;
(function b(){
b = 20;
console.log(window.b);
})();
- 打印20
var b = 10;
(function b(){
var b = 20;
console.log(b);
})();
from daily-interview-question.
JohnieXu
commented on May 3, 2024
- 打印10
var b = 10;
(function b(){
b = 20;
console.log(window.b);
})();- 打印20
var b = 10;
(function b(){
var b = 20;
console.log(b);
})();from daily-interview-question.
Jmingzi
commented on May 3, 2024
var b = 10;
(function b () {
var b = 20
console.log(window.b, b) // 10， 20
})()from daily-interview-question.
yygmind
commented on May 3, 2024
var b = 10;
(function b(){
b = 20;
console.log(b);
})();from daily-interview-question.
GitHubJiKe
commented on May 3, 2024
var b = 10;
(function b(){
b = 20;
console.log(this.b);//10
})();
**********
var b = 10;
(function b(){
this.b = 20;
console.log(this.b); //20
})();from daily-interview-question.
yipjianbo
commented on May 3, 2024
console.log(10);
console.log(20);
特地登陆进来点个赞，这老哥机灵鬼,笑死我了
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yipjianbo
commented on May 3, 2024
var b = 10;
(function b(){
b = 20;
console.log(b);
})();
输出10
var b = 10;
(function b(){
b = 20;
console.log(this.b);
})();
输出20
var b = 10;
(function b(){
var b = 20;
console.log(b);
})();
from daily-interview-question.
zhangqiong27
commented on May 3, 2024
原题：
var b = 10;
(function b(){
b = 20;
console.log(b);
})();
打印20：
(function b(b){
b = 20;
console.log( b);
})(b); // 20
(function b(){
let b = 20;
console.log(b);
})(); // 20
打印10：
(function b(){
b = 20;
console.log( this.b);
})(); // 10
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QZEming
commented on May 3, 2024
原题
var b = 10;
(function b(){
b = 20;
console.log(b);
})();皮一下
打印10
var b = 10;
(function b(){
b = 20;
console.log(10);
})();打印20
var b = 10;
(function b(){
b = 20;
console.log(20);
})();认真做题
打印10
var b = 10;
(function b(){
b = 20;
console.log(this.b);
})();打印20
var b = 10;
(function b(){
var b = 20;
console.log(b);
})();from daily-interview-question.
jingsy
commented on May 3, 2024
有人把原题讲讲吗 为啥打印 [Function: b]
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randomxiang
commented on May 3, 2024
var b = 10;
(function b(b){
console.log(b)
var b = 20;
console.log(b);
})(b);
from daily-interview-question.
zhangwen1932
commented on May 3, 2024
var b = 10;
(function b() {
let b=20;
console.log(window.b);
console.log(b);
})();from daily-interview-question.
codexu
commented on May 3, 2024
console.log(10)
console.log(20)
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soraly
commented on May 3, 2024
var b = 10;
console.log(b); //10
(function b(){
var b = 20;
console.log(b); //20
})();
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RoeyXie
commented on May 3, 2024
// 20
var b = 10;
(function b(){
var b = 20;
console.log(b);
})();
// 10
var b = 10;
(function b(){
b = 20;
console.log(window.b);
})();
from daily-interview-question.
zelixag
commented on May 3, 2024
这个题目问的不太好，函数表达式的name属于函数作用域的且不能重新复制，类似const定义，可以用来调用。
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m7yue
commented on May 3, 2024
// 10
var b = 10;
(function b(){
b = 20;
console.log(window.b);
})();
// 20
var b = 10;
(function b(){
let b = 20;
console.log(b);
})();from daily-interview-question.
BlackCloverM
commented on May 3, 2024
console.log(10);
console.log(20);你是来搞笑的吗？？？？？？ 😅
真把我逗笑了
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BarneyRoos
commented on May 3, 2024
//不太明白这题在考啥
var b = 10;
(function b(num){
console.log(num)
num = 20;
console.log(num);
})(b);from daily-interview-question.
wangsiyuan4
commented on May 3, 2024
var b = 10;
(function b() {
console.log(window.b)
let b = 20;
console.log(b);
})();
from daily-interview-question.
Yangfan2016
commented on May 3, 2024
// 打印 10
var b = 10;
(function b(c) {
b = 20;
console.log(c)
})(b)
// 打印20
var b = 10;
(function b(b) {
b = 20;
console.log(b)
})(b)
from daily-interview-question.
weijuer
commented on May 3, 2024
// 10
var b = 10;
(function (){
console.log(b);
b = 20;
})();
// 20
var b = 10;
(function (){
b = 20;
console.log(b);
})();from daily-interview-question.
18920199681
commented on May 3, 2024
var b = 10;
(function b(b){
b = 20;
console.log(this.b);
console.log(b);
})(b);from daily-interview-question.
liyi711
commented on May 3, 2024
打印20：
var b = 10;
(function b(){
var b = 20;
console.log(b);
})()
打印10：
var b = 10;
(function b(){
b = 20;
console.log(this.b);
})()
from daily-interview-question.
XW666
commented on May 3, 2024
var b = 10;
(function b() {
var b = 20;
console.log(b);
console.log(this.b)
})();
from daily-interview-question.
XW666
commented on May 3, 2024
var b = 10;
(function b() {
var b = 20;
console.log(b);
console.log(this.b)
})();
from daily-interview-question.
Chenmin926
commented on May 3, 2024
// 打印 10
var b = 10;
(function b(){
b = 20;
console.log(window.b);
})();
// 打印20
var b = 10;
(function b(){
window.b = 20;
console.log(window.b);
})();
from daily-interview-question.
npmrun
commented on May 3, 2024
console.log(10);
console.log(20)
from daily-interview-question.
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