I have two Objects:
"attributes": [
{
"trait_type": "Background",
"value": "Black"
},
{
"trait_type": "Eyeball",
"value": "White"
},
{
"trait_type": "Eye color",
"value": "Yellow"
},
{
"trait_type": "Iris",
"value": "Small"
},
{
"trait_type": "Shine",
"value": "Shapes"
},
{
"trait_type": "Bottom lid",
"value": "Low"
},
{
"trait_type": "Top lid",
"value": "Middle"
}
and
const traits =
{
"background": {
"black": "20%",
"red": "20%",
"blue": "30%",
"yellow": "10%",
"white": "10%"
},
"eyeball": {
"black": "15%",
"red": "25%",
"blue": "35%",
"yellow": "5%",
"white": "14%"
}
}
How can I add a third key, value pair in "attributes" with key="rarity" and value = % after matching both trait_type and value in the traits object?
I know how I can do that fairly quickly in Python but I'm new to JavaScript and wonder what's the best and fastest way to solve this.
You colud do something like:
let attributes = [ { "trait_type": "Background", "value": "Black" }, { "trait_type": "Eyeball", "value": "White" }, { "trait_type": "Eye color", "value": "Yellow" }, { "trait_type": "Iris", "value": "Small" }, { "trait_type": "Shine", "value": "Shapes" }, { "trait_type": "Bottom lid", "value": "Low" }, { "trait_type": "Top lid", "value": "Middle" } ];
const traits = { "background": { "black": "20%", "red": "20%", "blue": "30%", "yellow": "10%", "white": "10%" }, "eyeball": { "black": "15%", "red": "25%", "blue": "35%", "yellow": "5%", "white": "14%" } };
let result = attributes.map(attr => {
return {
"trait_type": attr.trait_type,
"value": attr.value,
"rarity": traits[attr.trait_type.toLowerCase()]?.[attr.value.toLowerCase()]
}
});
console.log(result);Use map to create result array with new rarity key that looks for percentage value in traits object.