In the following code document.write() function is not able to take string as its argument,
<!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>
The problem seems to be that there are already quotations around "document.write(5 + 6)".
So how do I add a usual text string to it?
Try with single quotes for string as below:
<!DOCTYPE html>
<html>
<body>
<h1>My First Web Page</h1>
<p>My first paragraph.</p>
<button type="button" onclick="document.write('Hello world')">Try it</button>
</body>
</html>
You may better use document.getElementById, because document.write is bad practice.
<h1>My First Web Page</h1>
<p>My first paragraph.</p>
<p id="result"></p>
<button onclick="document.getElementById('result').innerHTML=5 + 6">Click Me!</button>you can do this - let the string be in single quotes.
onclick="document.write('5 + 6')"
Note: You can interchnage single and double quotes. This also works
onclick='document.write("5 + 6")'
Try this..
<h1>My First Web Page</h1>
<p>My first paragraph.</p>
<button type="button" onclick='document.write(5 + 6)'>Try it</button>
</body>
</html>
single-quotes