Output
ການສະແດງຜົນຂອງ JS
- ການໃຊ້ innerHTML
ນໍາໃຊ້ເມຕອດ document.getElementById(id)
ຕົວຢ່າງ:
<!DOCTYPE html>
<html>
<body>
<h1>My First Web Page</h1>
<p>My First Paragraph</p>
<p id="demo"></p>
<script>
document.getElementById("demo").innerHTML = 5 + 6;
</script>
</body>
</html>
- ການໃຊ້ document.write()
ຕົວຢ່າງ
<!DOCTYPE html>
<html>
<body>
<h1>My First Web Page</h1>
<p>My first paragraph.</p>
<script>
document.write(5 + 6);
</script>
</body>
</html>
ການໃຊ້ document.write() ຫລັງຈາກໂຫລດແລ້ວ ທຸກພາກສ່ວນຂອງ HTML ຈະຖືກລົບ:
ຕົວຢ່າງ
<!DOCTYPE html>
<html>
<body>
<h1>My First Web Page</h1>
<p>My first paragraph.</p>
<button type="button" onclick="document.write(5 + 6)">Try it</button>
</body>
</html>
- ການໃຊ້ window.alert()
You can use an alert box to display data:
Example
<!DOCTYPE html>
<html>
<body>
<h1>My First Web Page</h1>
<p>My first paragraph.</p>
<script>
window.alert(5 + 6);
</script>
</body>
</html>
You can skip the window keyword.
ການໃຊ້ Alert
Example
<!DOCTYPE html>
<html>
<body>
<h1>My First Web Page</h1>
<p>My first paragraph.</p>
<script>
alert(5 + 6);
</script>
</body>
</html>
- ການໃຊ້ console.log() ເພື່ອສະແດງຂໍ້ມູນໃນ Browser
Example
<!DOCTYPE html>
<html>
<body>
<script>
console.log(5 + 6);
</script>
</body>
</html>
- JavaScript Print
ຕົວຢ່າງ
<!DOCTYPE html>
<html>
<body>
<button onclick="window.print()">Print this page</button>
</body>
</html>