I have the following chart:
const array = [
["one", true],
["two", false],
["three", false],
["four", true]
]
I would like to see this variable added when the value is true:
const add = ["ok"]
So that in the end it looks like this:
[
[ 'one', true, 'ok' ],
[ 'two', false ],
[ 'three', false ],
[ 'four', true, 'ok' ],
]
Currently, I'm trying the .map method:
const testBoolean = array.map(el => {
if (el[1] === true){
array.push(add)
}
})
console.log(array)
But I don't know where to tell it to push to line 3...
Thanks for your help, and have a nice day :) !
Never use map if you mean forEach. Only use map if you need the resulting array - in this case testBoolean would be a map
You want this
const array = [
["one", true],
["two", false],
["three", false],
["four", true]
]
const add = ["ok"]
array.forEach(el => {
if (el[1] === true) { // or just if (el[1]) if you are sure it is always a boolean
el.push(...add) // or add[0]
}
})
console.log(array)simply loop through array using forEach and check if the first index is true.
For boolean values you don't need to compare it with true or false.
const array = [
["one", true],
["two", false],
["three", false],
["four", true]
];
const add = ["ok"]
array.forEach(item => {
if(item[1]){
item.push(...add);
}
});
console.log(array)documentation for forEach
Another way:
const array = [
["one", true],
["two", false],
["three", false],
["four", true]
];
const add = ["ok"];
for (const item of array) {
item[1] && item.push(add[0]);
}