Javascript: Creating a custom object from string

Question

I have a string of comma separated values. As below:

var myValues = "Ip1, Ip2, Ip3";

I want to convert this to a custom object. The result should be:

 {
  Input: 'Ip1',
  Output: 'Ip1_Updated'    
 },
 { 
  Input: 'Ip2',
  Output: 'Ip2_Updated'
 },
 { 
  Input: 'Ip3',
  Output: 'Ip3_Updated'
 }

What is the best way to approach this. Can I split on "," and then loop through the string and create custom array

Can I split on "," and then loop through the string and create custom array. Yes, you can. — Scott Marcus
– Scott Marcus, Commented Mar 28, 2018 at 16:11

Ele · Accepted Answer · 2018-03-28 16:27:52Z

5

You can split an then use the function map

var myValues = "Ip1, Ip2, Ip3",
    result = myValues.split(",").map(s => ({ Input: s.trim(), Output: `${s.trim()}_Updated` }));
 
 console.log(result)

.as-console-wrapper { max-height: 100% !important; top: 0; }

Another alternative, is preparing the data and then convert to the desired structure:

var myValues = "Ip1, Ip2, Ip3",
    split = myValues.split(","),
    preparedData = split.map(str => str.trim()),
    result = preparedData.map(ip => ({ Input: ip, Output: `${ip}_Updated` }));
 
 console.log(result);

.as-console-wrapper { max-height: 100% !important; top: 0; }

edited Mar 28, 2018 at 16:27

answered Mar 28, 2018 at 16:11

Ele

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3 Comments

georg Over a year ago

It'd be cleaner to use an additional map step to trim things: .split(',').map(x => trim...).map(...)

Ele Over a year ago

@georg two loops?

aman Over a year ago

@Ele I have another question which is related to this mapping json. Would appreciate if you can look at this: stackoverflow.com/questions/49556448/…

Mamun · Accepted Answer · 2018-03-28 16:22:46Z

2

You can use split() and map():

var myValues = "Ip1, Ip2, Ip3";
myValues = myValues.split(',').map(function(i){
  return {Input: i.trim(), Output: i.trim() + '_Updated'};
});

console.log(myValues);

edited Mar 28, 2018 at 16:22

answered Mar 28, 2018 at 16:13

Mamun

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