我想要这个定义的未定义程序的快捷代码。 [英] I want shortcut codes for this defined undefined program.

问题描述

我想将多个变量的快捷方法合并为一个语句，如



if（a，b，c === undefined）

{a，b，c =im not defined}

else {a，b，c =im defined};



我尝试过：



var a = 1;

var b =1;

var c =;

var d;



if（a === undefined）

{a =im not defined;}

else {a =im defined;};



if（b === undefined）

{b =im not defined;}

else {b =im defined;};



if（c === undefined）

{c =im not defined;}

else {c =im defined;};



if（d === undefined）

{d =我未定义;}

else {d =im defined;};



document.write（a +
+ b +
+ c +
+ d）;



/ *我想要快捷方法* /

解决方案

请参阅 JavaScript教程 [ ^ ]。

首先，学会用正确的方法用这种语言编程。 />
然后，当你足够熟练的时候，你将在它上面创建自己的语言风格。



JavaScript教程 [ ^ ]



PS：您正在寻找的扭曲的快捷方式，不存在。

i want a shortcut method for multiple variable into one statement like

if (a,b,c ===undefined)
{ a,b,c = "i m not defined"}
else {a,b,c = "i m defined"};

What I have tried:

var a = 1;
var b = "1";
var c = "";
var d;

if (a === undefined)
{a = "i m not defined";}
else {a = "i m defined";};

if (b === undefined)
{b = "i m not defined";}
else {b = "i m defined";};

if (c === undefined)
{c = "i m not defined";}
else {c = "i m defined";};

if (d === undefined)
{d = "i m not defined";}
else {d = "i m defined";};

document.write(a+"
"+b+"
"+c +"
"+d);

/* i want shortcut method for it */

解决方案

See JavaScript Tutorial[^].

First, learn to program with this language the right way.
Then when you are skilled enough, you will create your own language flavor on top of it.

JavaScript Tutorial[^]

PS: the twisted shortcut you are looking for, does not exist.

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