When it comes to avoiding the creation of multiple variables with the same type, I've decided to declare them like this:
data () {
return {
today,tomorrow: new Date(),
};
},However, all I see in my IntelliJ terminal is an error message.
The error 'today' is not defined. no-undef
Did I make a mistake in the syntax, or is the process simply not possible?
When you return an object and use a comma to list properties, make sure to declare all properties beforehand to avoid any undefined variables.
If not all properties are defined, it may be better to not use an object at all.
function data() {
let sameVariable = new Date();
return {
today: sameVariable,
tomorrow: sameVariable,
};
}
This way, you can easily access the variables using obj.today and obj.tomorrow.
It's important to understand how objects work when returning something with {...}. In this case, you are returning an Object in your example.
It's not possible to declare and initialize multiple variables in one expression in JS object and JSON syntax.
If you require multiple variables with the same value, you can simply return it from a setup function.
setup(){
const now = new Date();
return {
today: now,
tomorrow: now
}
}
You can also create it in the "create" function.
created(){
this.today = new Date();
this.tomorrow = new Date();
}
However, keep in mind that Date is an instance of the Date class. So if two variables point to the same Date object, changing properties of one variable will affect the other. For example, if both your today and tomorrow variables point to the same Date object, modifying today.setHours will also impact tomorrow.
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