admin管理员组文章数量:1391977
I have a Perl script which prints out of html page. I want to use javascript to pop alert msg. The alert message is defined as string in the perl variable. I am trying to pass the perl variable value to javascript function as argument but it's not working. Please help.
$perl_variable = "Wele"; # alert msg
print <<START
<HTML>
some html code....
<p>Click the button to wait 3 seconds, then alert "Hello".</p>
<button onclick="myFunction('$perl_variable')">Try it</button>
<script>
function myFunction(var message){
setTimeout(function(){alert(message)},3000);
}
</script>
</HTML>
START
I have a Perl script which prints out of html page. I want to use javascript to pop alert msg. The alert message is defined as string in the perl variable. I am trying to pass the perl variable value to javascript function as argument but it's not working. Please help.
$perl_variable = "Wele"; # alert msg
print <<START
<HTML>
some html code....
<p>Click the button to wait 3 seconds, then alert "Hello".</p>
<button onclick="myFunction('$perl_variable')">Try it</button>
<script>
function myFunction(var message){
setTimeout(function(){alert(message)},3000);
}
</script>
</HTML>
START
-
1
Did you mean
perl_variableinstead ofpath_qa_image? Look in your browser's error console; there is likely an error caused by not quoting the variable. – Matt Ball Commented Mar 22, 2013 at 19:16 - Correcting ment - The path of file is defined in the perl variable to alert message – Kevin Commented Mar 22, 2013 at 19:17
- I've edited your question to remove the reference to PERL; perl is not an acronym. – Quentin Commented Mar 22, 2013 at 19:22
- While in this case it is fairly easy to see what is wrong, as a rule of thumb, when you are generating one programming language from another and the final result doesn't work - then first determine if the problem is that you don't know how to generate the code you want (in which case show the two sets of code) or if you don't know what code you should be generating (in which case show only the generated result and describe how its behaviour differs from what you expect). – Quentin Commented Mar 22, 2013 at 19:25
1 Answer
Reset to default 6NB: The first half of this answer refers to the code that originally (before edits) appeared in the question.
You need to:
- Use the right variable name
- Generate a JavaScript string literal (by quoting the data)
Such:
myFunction('$perl_variable')
Note that if your data might include characters that are not allowed in a JavaScript string literal (such as a new line), characters that have special meaning in a string literal (such as the quote mark that delimits it) or characters that have special meaning in HTML (such as the quote mark that delimits the attribute value) then you will also need to perform suitable escaping (in two steps, first for JS, then for HTML).
As an aside, your function definition in JS is also wrong:
function myFunction(var path){
The var keyword may not be used in the FormalParameterList. That should read:
function myFunction(path){
本文标签： How to pass Perl variable into Javascript functionStack Overflow
版权声明：本文标题：How to pass Perl variable into Javascript function? - Stack Overflow 内容由网友自发贡献，该文观点仅代表作者本人， 转载请联系作者并注明出处：http://www.betaflare.com/web/1744701526a2620589.html， 本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌抄袭侵权/违法违规的内容，一经查实，本站将立刻删除。
发表评论