“Unterschied zwischen var, let, const” Code-Antworten

Was ist der Unterschied zwischen LET und CONT in JavaScript?

The difference is that with const you can only only assign a value to a variable
once, but with let it allows you to reassign after it has been assigned.
Coding Club

Unterschied zwischen var, let, const

// var is a function scope ***
if(true){
    var varVariable = 'This is var';
    var varVariable = 'This is var again';
}

console.log(varVariable); // This is var again

// let is a block scope ***
if(true){
    let letVariable = 'This is let';
    let letVariable = 'This is let again';

    // let variable can't re-define but we can re-assign value


    console.log(letVariable); // let letVariable = 'This is let again';^SyntaxError: Identifier 'letVariable' has already been declared
}

console.log(letVariable); //ReferenceError: letVariable is not defined



// const variable can't re-define and re-assign value
// const is a block scope ***
if(true){
    const constVarible = {
        name: 'JavaScript',
        age: '25 years',
    };
    constVarible.name = 'JS';

    console.log(constVarible) // {name: 'JS',age: '25 years'} <= we can update const variable declared object 
}
Md. Asif Iqbal

Ähnliche Antworten wie “Unterschied zwischen var, let, const”

Fragen ähnlich wie “Unterschied zwischen var, let, const”

Weitere verwandte Antworten zu “Unterschied zwischen var, let, const” auf JavaScript

Durchsuchen Sie beliebte Code-Antworten nach Sprache

Durchsuchen Sie andere Codesprachen