Javascript how to change page title with user input-CodePudding

The thing i wanna do is when user writes something to input and sumbits it, the page will change to the input.

Example:

If user writes "Web" to the input, the page title should change to "Web"

Here's the code:

JS:

document.getElementById("titleSumbitBtn").onclick = function (){
    var newTitle = document.getElementById("newTitle").textContent;
    document.getElementById("title").innerHTML = newTitle;
}

HTML:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title id="title">Web Editor</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <center><label id="originLabel">Welcome to Web Editor!</label><br></center>
    <br><label id="changeTitleLabel">Change the title of Web: </label><br>
    <input type="text" id="newTitle"><br>
    <button type="button" id="titleSumbitBtn">Change</button>
</body>
</html>

CodePudding user response：

You can assign new title to the document like this:

document.getElementById("titleSumbitBtn").onclick = function (){
    var newTitle = document.getElementById("newTitle").value;
    document.title = newTitle;
}

This is actual implementation but keep in mind that it must run after the DOM element with id newTitle.

If you put your <script> tag inside <head>, you'll need DOMContentLoaded:

document.addEventListener('DOMContentLoaded', () => {
    document.getElementById("titleSumbitBtn").onclick = function (){
        var newTitle = document.getElementById("newTitle").value;
        document.title = newTitle;
    }
})

CodePudding user response：

try this:

document.getElementById("titleSumbitBtn").addEventListener("click", function (){
var newTitle = document.getElementById("newTitle").value;
document.getElementById("title").innerText = newTitle;

})