Can't run JavaScript

Question

I'm following tutorial cideon on JavaScript and wrote some examples in Notepad++ and saved them as something.html. The problem is when I open it with IE or Chrome, the code between <script> and </script> tags doesn't run at all. What is wrong with that?

<!doctype html>
<html>
<head>
    <title>Example of prompt()</title>
    <script>
        var user_name;
        user_name = prompt("What is your name?");
        document.write("welcome to my page ")
            + user_name + "!");
    </script>
</head>
</html>

document.write("welcome to my page " + user_name + "!"); try this — Akhilesh Singh, Apr 20 '16 at 08:43
Stop it guys. No need to post such a bunch of answers for such a little problem... — , Apr 20 '16 at 08:55

score 7 · Accepted Answer · answered Apr 20 '16 at 08:44

7

There is a syntax error in document.write statement.

Write it as follow

document.write("welcome to my page "+ user_name + "!");

answered Apr 20 '16 at 08:44

Divyesh Savaliya

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score 0 · Answer 2 · answered Apr 20 '16 at 08:46

0

There is one too many ")"

document.write("welcome to my page " + user_name + "!");

answered Apr 20 '16 at 08:46

jbrond

696
6
18

Nina Scholz · Answer 3 · 2016-04-20T08:54:59.260

0

First, move the script part out of the head to the body tag.

Second, write

document.write("welcome to my page " + user_name + "!");

in one line and remove the first closing parenthesis.

<!doctype html>
<html>
    <head>
        <title>Example of prompt()</title>
    </head>
    <body>
        <script>
            var user_name;
            user_name = prompt("What is your name?");
            document.write("welcome to my page " + user_name + "!");
        </script>
    </body>
</html>

edited Apr 20 '16 at 08:54

answered Apr 20 '16 at 08:47

Nina Scholz

323,592
20
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it more a problem with `document.write` in the head. and a [possible problem](http://stackoverflow.com/questions/802854/why-is-document-write-considered-a-bad-practice) with `document.write` at all. – Nina Scholz Apr 20 '16 at 08:58

score 0 · Answer 4 · answered Apr 20 '16 at 08:54

When you open in chrome. Press F12 or Right Click > Inspect Element. Make sure you select "Console" at the top. Pay attention and try to understand what the console tells you.

In your case, this is what it says when I paste that code into my console:

"Unexpected token" This means that it can't understand the script, it was expecting a ; or a new line because you have a bracket at the end. Remove that and it should work.

Can't run JavaScript

4 Answers4