CODEWITHSUNDEEP
javascriptnode.jsexpress
John Carlo Velasquez
John Carlo Velasquez

Reputation: 159

How to Remove string after string replace

For that code below the output of ins (lets assume the value of keys are summer, spring, fall, winter) is:

['req.body.summer, req.body.spring, req.body.fall, req.body.winter']

What i want is remove the string after the replace command, so i can insert it to my SQLite query. So the output must be:

[req.body.summer, req.body.spring, req.body.fall, req.body.winter]

Im just new into programming so please bear with me. Thank you!

var arr = '';

Object.keys(input).forEach(function(key) {
  arr += 'req.body.' + key + ', ';
});

var ins = [arr.replace(/,\s*$/, '')];

console.log(ins);

Upvotes: 0

Views: 62

Answers (3)

trincot
trincot

Reputation: 351138

If the input is an array of strings, like 'summer', then do this:

var arr = input.map(key => req.body[key]);


// Sample input
var input = ['summer', 'spring', 'fall', 'winter'];

// Sample req:
var req = {
    body: {
        summer: 'sun',
        spring: 'birds',
        fall: 'leaves',
        winter: 'snow'
    }
};

var arr = input.map(key => req.body[key]);

console.log(arr);

If you prefer the function syntax instead of =>:

var arr = input.map(function (key) {
    return req.body[key];
});

Upvotes: 1

user1428716
user1428716

Reputation: 2136

What you are looking for an Array of String Objects 

var arr = new Array() ;var input= { 'spring':'a','summer': 'b'}
    Object.keys(input).forEach(function(key) {
      arr.push('req.body.' + key);
    });
    console.log(arr); // Prints ["req.body.spring", "req.body.summer"]

Upvotes: 1

Sankar
Sankar

Reputation: 7117

Try this...

Just declare arr as an array and Push the values into it.

var arr = [];
var input = ['summer', 'spring', 'fall', 'winter'];
(input).forEach(function(key,value) {
  arr.push('req.body.' + key);
});


console.log(arr);

Upvotes: 1

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