why doesn't it work? i just want to add a paragraph to a div. Guys, why doesn't it work? i just want to add a paragraph to a div.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<script src="pobieranko.js"></script>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div class="klasa">lalal</div>
</body>
</html>
const divek = document.querySelector(".klasa")
const paragraf = document.createElement("p")
paragraf.textContent = "paragrafik"
divek.appendChild (paragraf);
It appears you did not add a script tag to the page as so:
<script>
const divek = document.querySelector(".klasa")
const paragraf = document.createElement("p")
paragraf.textContent = "paragrafik"
divek.appendChild (paragraf);
</script>
Related
Why is nothing displayed in the console when selecting text?
<!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>Document</title>
</head>
<body>
dhksdh lsjkdlskdj s fjlkfjs d lsdjslkdj s sldjsldkj s
<script>
const onSelect = () => {
console.log('onSelect text')
}
document.body.addEventListener('select', onSelect)
</script>
</body>
</html>
Maybe I wrote something wrong?
hello my code isn't working idk why i tried to make textarea char counter that only shows the chachter not maxiumum
here is the java script
let text = document.querySelector('#text');
let number = text.value.length;
let count = document.querySelector('#count');
text.addEventListener("input", updateCount());
function updateCount(){
count.value + number
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Karakter sayısı</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div class="ses">
<textarea id="text" placeholder="Yazıyı buraya Kopyala veya Yaz"></textarea>
</div>
<span id="filhu">Bu kadar yazdın:</span><span id="count">0</span>
<script src="main.js"></script>
</body>
</html>
In your text.addEventListener("input", updateCount()); assignment you did not assign the function updateCount to the input event of the selected element but instead you executed it once and assigned the non-existent return value of the function call to the event.
And in the function itself you will need to put (=assign) the calculated count somewhere too:
let text = document.querySelector('#text');
let count = document.querySelector('#count');
text.addEventListener("input", updateCount);
function updateCount(ev){
count.textContent=ev.target.value.length;
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Karakter sayısı</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div class="ses">
<textarea id="text" placeholder="Yazıyı buraya Kopyala veya Yaz"></textarea>
</div>
<span id="filhu">Bu kadar yazdın:</span><span id="count">0</span>
<script src="main.js"></script>
</body>
</html>
ev.target.value.length gets the current length of the <textarea> element and count.textContent= assigns it to the target <span>.
A better way is by subscribing to the keyup event and getting the value from the scope using this keyword
function characterCount() {
document.getElementById('text').onkeyup = function () {
document.getElementById('count').innerHTML = this.value.length;
};
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Karakter sayısı</title>
</head>
<body>
<div class="ses">
<textarea id="text" placeholder="Yazıyı buraya Kopyala veya Yaz" onchange="characterCount()"></textarea>
</div>
<span id="filhu">Bu kadar yazdın:</span><span id="count">0</span>
</body>
</html>
I Don't khow why my console is telling me that the result is undefined.I am learning DOM and found the problem on my first code which i don't understand
<!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>Document</title>
<script>
let head = document.getElementsByClassName(".main");
console.log(head.textContent);
let tail = document.getElementsByTagName("p");
console.log(tail.textContent);
</script>
</head>
<body>
<div class="main">
<p>hello</p>
</div>
</body>
</html>
The elements doesn´t exist when the script runs in head. Move the script to after the elements
Change from .main to main in getElementsByClassName
getElementsByClassName returns a list so add [0] to getElementsByClassName("main") to get the first element
<div class="main">
<p>hello</p>
</div>
<script>
let head = document.getElementsByClassName("main")[0];
console.log(head.textContent);
let tail = document.getElementsByTagName("p")[0];
console.log(tail.textContent);
</script>
Move your script to the body
document.getElementsByClassName returns a collection of HTML elements, not a single element
with document.getElementsByClassName you should pass main, not .main
the textContent of the div with class main is probably not what you expect
to get an single element by its class name or its tag name, you can also use querySelector which is more simple (but slower)
Here is a working version :
<!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>Document</title>
</head>
<body>
<div class="main">
<p>hello</p>
</div>
<script>
let head = document.querySelector(".main");
console.log(head.textContent);
let tail = document.querySelector("p");
console.log(tail.textContent);
</script>
</body>
</html>
This question already has answers here:
How do I change the text of a span element using JavaScript?
(18 answers)
Closed 3 years ago.
i have no idea about this error, because i just checked all of other topics and didn't get result.
let demo = document.getElementById("#demo");
demo.innerText("yo");
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Pract</title>
</head>
<body>
<script src="javascript.js"></script>
<p id="demo"></p>
</body>
</html>
//currently your id is demo
let demo = document.getElementById("demo");
demo.innerText="yo";
///if your id is #demo use this
let demo2 = document.getElementById("#demo");
demo2.innerText="yolo";
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Pract</title>
</head>
<body>
<script src="javascript.js"></script>
<p id="demo"></p>
<p id="#demo"></p>
</body>
</html>
As your id is demo, not #demo, you need to write your code like this:
let demo = document.getElementById("demo"); // don't use #
demo.innerText = "yo"; // Also change innerText like this
And for changing innerText property have a look at docs. innerText is not a method.
I am trying to display data randomly in my file 'question.json' on HTML but somehow there's nothing happened. I'm starting to learn JavaScript and still don't know how to fix. Here's my code:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Answer Something</title>
<script>
$.getJSON('question.json', function(data){
console.log(data)
let questionList = data[Math.floor(Math.random()* data.length)];
let display = document.getElementById('question');
display.innerHTML = questionList;
});
</script>
</head>
<body>
<nav>
Quick Ask
Quick Answers
</nav>
<h1 id="question"></h1>
<div>
<button>Sai/Không/Trái</button>
<button>Đúng/Có/Phải</button>
</div><br>
<div>
<button>Kết quả vote</button>
<button>Câu hỏi khác</button>
</div>
</body>
</html>