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When i tried create .invert() object with two ways :
invert (object) {
let invertedObject = {};
for (let key in object) {
invertedObject[object[key]] = key
};
return invertedObject;
}
This works fine but :
invert (object) {
let invertedObject = {};
for (let key in object) { invertedObject.object[key] = key
};
return invertedObject;
}
delete objectName[‘Property Name’];
delete objectName.propName;
this is the example they give to delete. Does it not work because it has space in the key? "Secret Mission??? I to am trying to figure it out?
/*
OBJECT: lambo
KEY: garageLocation, "door type", color, "still available"
VALUE: "bay area", "suicide door", "fancy shmancy", "yes"
if the KEY has "two words" or "special symbol", they must be included in quotation marks
*/
let lambo = {
garageLocation: "bay area",
"door type": "suicide door",
color: "fancy shmancy",
"still available": "yes"
}
console.log(lambo);
//ACCESS TO KEYS
console.log("one word KEY color (dot): "+lambo.color);
console.log("two words KEY door type [square brackets]:"+lambo["door type"]);
//KEY CHANGE
lambo["door type"] = "regular"; //assigning new property
console.log("KEY'door type' changed ")
console.log(lambo);
//Deleting property from an object with delete operator
delete lambo.color;
delete lambo["still available"];
//Priting updated object lambo, without two last keys
console.log(lambo);
Has anyone encountered a problem going pass Step 1? I couldn’t move on to Step 2 even after my code was correct. Maybe I’m not seeing it correctly but is the code below for step 1 correct?
When I try a delete operate with a string property name, do I have to use the bracket notation [ ]? When I tried to run the string using delete spaceship.‘Secret Mission’; I get syntax error.
However, when I utilize delete spaceship[‘Secret Mission’]; there is no error ( and this is also the correct solution).
Not a copy, the same array, only mutated. a still points to the same object.
That is the basic difference between the two terms mentioned. In the first example, by re-assigning a a new value, a now points to a different object than before. That’s when the object was a number. When we made a into an array changing the array values did not change what a references. Making sense?
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