如何在JS函数参数中输入变量名修改变量值

let variables = {
  myVar: 10
};

function updateVariable(variables, key, newValue) {
  if (variables.hasOwnProperty(key)) {
    variables[key] = newValue;
  }
}

console.log(variables.myVar); // 输出: 10
updateVariable(variables, 'myVar', 20);
console.log(variables.myVar); // 输出: 20

let myVar = 10;

function updateVariable(variableName, newValue) {
  eval(`${variableName} = ${newValue}`);
}

console.log(myVar); // 输出: 10
updateVariable('myVar', 20);
console.log(myVar); // 输出: 20

let myVar = 10;

function createUpdater(variableName) {
  return function(newValue) {
    window[variableName] = newValue;
  };
}

let updateMyVar = createUpdater('myVar');
console.log(myVar); // 输出: 10
updateMyVar(20);
console.log(myVar); // 输出: 20

let variables = {
  myVar: 10
};

function updateVariable(variables, key, newValue) {
  Reflect.set(variables, key, newValue);
}

console.log(variables.myVar); // 输出: 10
updateVariable(variables, 'myVar', 20);
console.log(variables.myVar); // 输出: 20