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Agustin G.
Asked: 2020-10-19 13:24:09 +0800 CST 2020-10-19 13:24:09 +0800 CST

Remove element from a JS string

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I have the following string

[{"idServicio":10},{"idServicio":11},{"idServicio":12}]

and what I want to do is remove an element from the value of the idService, for example removing the id value 11, and something like this:

[{"idServicio":10},{"idServicio":12}]

Could you help me with the method substrbut I wanted to know if there is a method or function to which I pass the value of the id and delete it in a single line of code, without worrying about the location of the element and the commas.

For me it is a JSON, but the JS console tells me that it is a string (could it be both?) That is why the title of the question is like this. If I have misconceptions I appreciate any comment, I'm taking my first steps.

Thank you very much

javascript

2 Answers

  1. Best Answer

    You can help yourself from the method filter()which:

    Edition

    You need to make use of JSON.parse()since at the beginning you have a text string and with this method we will obtain a JavaScript object that will be capable of being iterated by the method that I am proposing in this answer

    It will allow you to generate a new vector with the elements of the original vector that meet a certain condition.

    For example in your scenario, you can: Filter by the key idServiciowhen it is different from 11, so that the variable datosbecomes the new vector that has all the elements of the previous one except the one with id 11

    Being that way:

        data = '[{"idServicio":10},{"idServicio":11},{"idServicio":12}]'
    data2 = JSON.parse(data)
        
    let datos = data2.filter((elemento) => elemento.idServicio !== 11)
        
    console.log(datos)

    • 4

  2. How about I leave you this function, I hope it works for you:

    spliceis in charge of deleting the found object:

    1st parameter: will delete the object of index i.
    2nd parameter: deletes the number of objects, in our case only 1. Optional
    3rd parameter also allows adding.

     
 function eliminarElemento(ids){
 
//Borrar un objeto concreto del array:
for (var i =0; i < ids.length; i++){
   if (ids[i].idServicio === 11) {
      ids.splice(i,1);
   }
}
return JSON.stringify(ids);

}

let ids = [{"idServicio":10},{"idServicio":11},{"idServicio":12}];

console.log(eliminarElemento(ids));

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