I'm a very beginner in javascript. I'm declaring the string variable 'hello' based on the if condition. I want to print the variable 'hello' outside the if/else loop, how can I make this work?
var test = 4;
if (test > 3) {
let hello = "hello world";
}
else {
let hello = "hello gold";
}
console.log(hello);
I don't want this way
var test = 4;
if (test > 3) {
let hello = "hello world";
console.log(hello);
}
else {
let hello = "hello gold";
console.log(hello);
}
You can just declare let hello='' at the beginning of the code:
As let variable have the scope inside the brackets of them { }...
The let statement declares a block-scoped local variable, optionally initializing it to a value.
Read More:
What's the difference between using "let" and "var"?
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/let
var test = 4;
let hello = "";
if (test > 3) {
hello = "hello world";
} else {
hello = "hello gold";
}
console.log(hello);When you use let, the variable only exists within the braces ({}) that is was declared in. You need to either do:
var test = 4;
let hello;
if (test > 3) {
hello = "hello world";
}
else {
hello = "hello gold";
}
console.log(hello);Or
var test = 4;
let hello = test > 3 ? "hello world" : "hello gold";
console.log(hello);Or
var test = 4;
let hello = "hello gold";
if (test > 3) {
hello = "hello world";
}
console.log(hello);You just need to declare the hello variable outside the if. Doing this, it will be visible for both if and else
var test = 4;
let hello
if (test > 3) {
hello = "hello world";
}
else {
hello = "hello gold";
}
console.log(hello);
condition ? exprIfTrue : exprIfFalse developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/… - Conditional (ternary) operator - JavaScript | MDN
let hello=''at the beginning of the codesif; you use theifto decide what to assign to a variable that has already been declared.