How to Convert a String in a Function into an Object

How to convert a string in a function into an object?

The trick is to use parse. For instance:

> x <- "A"
> eval(parse(text=paste("df$", x, sep = "")))
 [1]  1  2  3  4  5  6  7  8  9 10

See also this Q/A: Evaluate expression given as a string

How to convert a string into an object with javascript and return some keys in snake_case?

You can use map and reduce:

function myOrder(str) {
  return str.length === 0 ?
     {} :
     str.split(',')
        .map(s => s.match(/(?<qty>\d+)\s*(?<name>.+)/).groups)
        .reduce((res, {name, qty}) => ({
          ...res, [name.replace(/\s/g, '_')]: +qty
        }), {});
}

console.log( myOrder('') );
console.log( myOrder('2 coca cola, 4 beer') );
console.log( myOrder('  46 foos & bars, 0fizz') );

Converting string to object with Javascript

"JwtBody { user_id: 1, auth_id: 1}" is obviously not a standard json string,So you can try this.

function strToObj(str){
   var obj = {};
   if(str&&typeof str ==='string'){
       var objStr = str.match(/\{(.)+\}/g);
       eval("obj ="+objStr);
   }
   return obj
}

Convert string object to object

So I tried to help

if (inlineScriptsTexts.includes('zvkDL '+'=')) {
  const str = inlineScriptsTexts.trim()
   .replace('zvkDL '+'=',"")
   .replace(/'/g,'"')
   .replace(/\/\/.*?\n/g,"")
   .replace(/\};/g,"}")
  console.log(str)
  console.log(JSON.parse(str));
}

But the function is a BIG problem

// the reason it won't work:// this is as good as a representation of the object as can be made
const obj =  {    "language": "cs",    "currency": "czk",    "event": "akurva",    "ecommerce": {      "purchase": {        "actionField": {          "id": 555,          "revenue": 535535,          "shipping": 3535,        }      }    },    "eventCallback": function() { setGTMcookie(555); }, // this will NOT be seen by JSON
    "eventTimeout": 2000,    "eventCookie": {      "name": "dasd",      "expires": "asdsadd",      "value": "funguje to",    }  }  console.log(JSON.stringify(obj))
/*

window.onload = function() {  let objExist = false;  let inlineScripts = document.body;  let inlineScriptsBlocks = Array.from(inlineScripts.getElementsByTagName('script'));  inlineScriptsBlocks.forEach(scriptBlock => {    let inlineScriptsTexts = scriptBlock.innerText;    if (inlineScriptsTexts.includes('zvkDL '+'=')) {      const str = inlineScriptsTexts.trim().replace('zvkDL '+'=',"").replace(/'/g,'"').replace(/\/\/.*?\n/g,"").replace(/\};/g,"}")      console.log(str)      console.log(JSON.parse(str));    }  });}*/

<script>  zvkDL = {    'language': 'cs',    'currency': 'czk',    'event': 'akurva',    'ecommerce': {      'purchase': {        'actionField': {          'id': 555,          'revenue': 535535,          'shipping': 3535,        }      }    },    'eventCallback': function() {      setGTMcookie(555); // Jak se bude callback jmenovat nechám na vás. Jen to musí být srozumitelné. Pozor na scope JS callbacku.    },    'eventTimeout': 2000,    'eventCookie': {      'name': 'dasd',      'expires': 'asdsadd',      'value': 'funguje to',    }  };</script>

Convert function parameter in string into parameter in object

You could convert the string to an object that the function accepts.

function toObj(str) {
  const a = str.split(/,.?/g);
  return a.reduce((p, c) => {
    const kv = c.replace(/'/g, '').split(':');
    p[kv[0]] = kv[1];
    return p;
  }, {});
}

toObj(str); // { location: "L1", row_name: "r1", value: "18.4" }

DEMO

Given a string describing a Javascript function, convert it to a Javascript function

There's also the Function object.

var adder = new Function("a", "b", "return a + b");