Convert string to variable name in JavaScript

Question

I’ve looked for solutions, but couldn’t find any that work.

I have a variable called onlyVideo.

\"onlyVideo\" the string gets passe

Answer 1

You can access the window object as an associative array and set it that way

window["onlyVideo"] = "TEST";
document.write(onlyVideo);

Answer 2

If it's a global variable then window[variableName] or in your case window["onlyVideo"] should do the trick.

Answer 3

It can be done like this

(function(X, Y) {
  
  // X is the local name of the 'class'
  // Doo is default value if param X is empty
  var X = (typeof X == 'string') ? X: 'Doo';
  var Y = (typeof Y == 'string') ? Y: 'doo';
  
  // this refers to the local X defined above
  this[X] = function(doo) {
    // object variable
    this.doo = doo || 'doo it';
  }
  // prototypal inheritance for methods
  // defined by another
  this[X].prototype[Y] = function() {
    return this.doo || 'doo';
  };
  
  // make X global
  window[X] = this[X];
}('Dooa', 'dooa')); // give the names here

// test
doo = new Dooa('abc');
doo2 = new Dooa('def');
console.log(doo.dooa());
console.log(doo2.dooa());

Answer 4

let me make it more clear

function changeStringToVariable(variable, value){
window[variable]=value
}
changeStringToVariable("name", "john doe");
console.log(name);
//this outputs: john doe
let file="newFile";
changeStringToVariable(file, "text file");
console.log(newFile);
//this outputs: text file

Answer 5

Javascript has an eval() function for such occasions:

function (varString) {
  var myVar = eval(varString);
  // .....
}

Edit: Sorry, I think I skimmed the question too quickly. This will only get you the variable, to set it you need

function SetTo5(varString) {
  var newValue = 5;
  eval(varString + " = " + newValue);
}

or if using a string:

function SetToString(varString) {
  var newValue = "string";
  eval(varString + " = " + "'" + newValue + "'");
}

But I imagine there is a more appropriate way to accomplish what you're looking for? I don't think eval() is something you really want to use unless there's a great reason for it. eval()