i want to ask something about how to join data inside variable, so basicly I have data that I foreach (because i need to change that object), then I want to enter each data that I foreach into a variable, as below:
const thisData = {["abcd","efgh"]}
for (let objData of thisData) {
//lets say i need to change every data from word to number
//I've managed to change it
const newData = changetoNumber(objData)
}
then i need to save it to another variable, and now i'm stuck, can you guys help me?
//this is what i need
console.log(listnewData)
//1234 5678
You are looking for a "map".
So, the map method takes in a single parameter, a function which is called on each item, in the simplest case with a single parameter, the item itself like so:
function f(x) {
return x.length // for example
}
const thisdata = ["abcd", "efg"];
const newvar = thisdata.map(f);
console.log(newvar); // prints [3,2]
You can use the map function to create output in the form of an array.
const start = 96; // char code of 'a' is 97
const thisData = ["abcd","efgh"]
const toNumber = (str) => {
const strArr = str.split('');
return strArr.map(s => s.charCodeAt() - start).join('');
}
console.log(thisData.map(toNumber))I think your Data is not proper. It may be like This
let thisData = {
numbers : ["asas" , "sasas"],
}
for that Solution might be like this
for(const i in thisData){
thisData.numbers = thisData[i].map((x, index) => {
if(typeof(x) == "string"){
return index + 1;
}
})
}
console.log(thisData);
And your Final output is :
{
numbers: [1, 2]
}
You can also Try out this in my JSfiddle Playground Link : https://jsfiddle.net/anks_patel/5tLnrm6c/