转为字符窜 js

let num = 123;
console.log(num.toString()); // "123"

let bool = true;
console.log(bool.toString()); // "true"

let num = 123;
console.log(String(num)); // "123"

let bool = true;
console.log(String(bool)); // "true"

let obj = {a: 1};
console.log(String(obj)); // "[object Object]"

let name = "Alice";
let age = 30;
console.log(`My name is ${name} and I am ${age} years old.`); // "My name is Alice and I am 30 years old."

let num = 123;
console.log("The number is: " + num); // "The number is: 123"

let bool = true;
console.log("The boolean is: " + bool); // "The boolean is: true"

function convertToString(value) {
    if (value === null || value === undefined) {
        return String(value);
    }
    return value.toString();
}

console.log(convertToString(123)); // "123"
console.log(convertToString(true)); // "true"
console.log(convertToString(null)); // "null"
console.log(convertToString(undefined)); // "undefined"
console.log(convertToString({a: 1})); // "[object Object]"