CODEWITHSUNDEEP
javascriptregexobject
Trung Tran
Trung Tran

Reputation: 13751

How to do a match and replace on javascript object

Does anyone know how to do a match and replace on a javascript object value? For example:

var obj = {
  name: '/asdf/sdfdsf/:_id',
  type: 'dfdfdf'
}

obj.name = obj.replace(':_id', 'replacement');

I want the resulting object to be:

obj = {
  name: '/asdf/sdfdsf/replacement',
  type: 'dfdfdf'
}

However, this gives me the error obj.replace is not a function. Can someone help?

Upvotes: 0

Views: 716

Answers (4)

LellisMoon
LellisMoon

Reputation: 5020

If you need a replace on object you can use one function like that.

var obj = {
  name: '/asdf/sdfdsf/replacement/_id',
  type: 'dfdfdf'
};
var replaceInObject=function(object,word,value){
  var string=JSON.stringify(object);
  string=string.replace(word,value);
  object=JSON.parse(string);
  return object;
}

console.log(replaceInObject(obj,'_id','testID'));

Upvotes: 0

Perette
Perette

Reputation: 841

You can replace the single string in the object:

obj.name = obj.name.replace (':_id', 'replacement')

If you want to replace all strings in the object:

for (x in obj) {
    if (typeof (obj[x]) == 'string')
        obj [x] = obj [x].replace (':_id', 'whee!')
}

If you're certain the object only contains strings, you can remove the 'if' from the loop. This is non-recursive.

Upvotes: 0

kind user
kind user

Reputation: 41893

You can use replace function on an object. Use Object.keys() instead to catch every property and replace it's key.

var obj = {
  name: '/asdf/sdfdsf/:_id',
  type: 'dfdfdf'
}

//if you want to change :_id in few keys
var res = Object.keys(obj).map(v => obj[v].replace(':_id', 'replacement'));
console.log(res);

//if you want to change it only in one, specified property - use direct reference
var singleObj = obj.name.replace(':_id', 'replacement');
console.log(singleObj);

Upvotes: 1

Lyubomir
Lyubomir

Reputation: 20037

String.prototype.replace() is applied on a string, not an object, here is working code

var obj = {
  name: '/asdf/sdfdsf/:_id',
  type: 'dfdfdf'
}

// change is here
obj.name = obj.name.replace(':_id', 'replacement');

console.log(obj)

Upvotes: 3

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