How do I pop up an alert in Javascript?
How do I pop up an alert in Javascript?
I tried alert\"HELLO\" but that didn\'t work.
Can someone tell me the correct syntax?
Oh by the
-
if you're having problems with alerts, it probably means your javascript is disabled in your browser, but if it isn't these methods should solve your issue.
<script type="text/javascript" > window.alert("Hello World!"); alert("Hello World!"); </script>讨论(0) -
<script type="text/javascript">alert("Hello");</script>讨论(0) -
<html> <head> <script type="text/javascript"> function myFunction(){ alert("hello"); } </script> </head> <body> <input type="submit" onClick="myFunction()"> </body> </html>Here is the JavaScript function which has an alert box. This function is called by clicking on the submit button.
讨论(0) -
Unlike VBScript, Javascript requires parentheses around function calls.
Therefore, you need to write
alert("Hello!");It's also prefereable (but not required) to end every statement with a semicolon
;.Finally, if you aren't already, you need to put it in a script block, like this:
<script type="text/javascript"> alert("Hello!"); </script>In responce to the end of your original question, there is no "javascript exe". You can put javascript inside a script tag in an HTML page, or you can make a standalone
.jsfile and double-click on it (in Windows) to run it using WSH.讨论(0) -
There are a few ways.
Use your web browser, type this code in address bar.
javascript:alert("Hello World!")Open web developer in your web browser, go to console and type:
alert("Hello World!")Type the code in .html or .js code as shown in other answers above.
讨论(0) -
You need to add parentheses:
alert("HELLO");讨论(0)
加载中...
- 热议问题