i want to create variable base on conditional, but even simple code i can not get the new variable this is my code
exports.productPatch = (req, res, next) => {
const id = req.params.productId;
const image = req.body.productImage;
if(image){
const newImage = image;
}else{
const newImage = "1598173461682-636126917.jpg";
}
console.log(newImage);
}
but when i call newImage response is not defined
Try this
const newImage = (image) ? image : "1598173461682-636126917.jpg"
If this gives undefined, check if your request body really sends the productImage.
You cannot reassign and redeclare a variable declared with const (See this).For your code you can use let and then reassign it according to the condition.
exports.productPatch = (req, res, next) => {
const id = req.params.productId;
const image = req.body.productImage;
let newImage;
if(image){
newImage = image;
}else{
newImage = "1598173461682-636126917.jpg";
}
console.log(newImage);
}
Please check const scope in the below link
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/const
The value of a constant can't be changed through reassignment, and it can't be redeclared.
use let instead of const like below as @Divin answer
let newImage = (image) ? image : "1598173461682-636126917.jpg"
