Assume I have a var 'v' which has the value 'xxx'.
Is there a simple syntax to create the string aaa(v) to aaaxxx in Javascript?
In other scripting languages I might do something like aaa$v or eval('aaa$v').
In Javascript I managed just to do it with the string replace function but that's is both ugly and might not always work when I have several instances of 'v' in the string where only some have to be replaced.
This Question has been solved and asker verified All Experts Exchange premium technology solutions are available to subscription members.
Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.
If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.
Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.
Save solutions to your questions, answers you’ve discovered through searching plus helpful articles in your personal knowledgebase for easy future access.
Access the answers to your technology questions today.
30-day free trial. Register in 60 seconds.
Members of the expert community talk about why the experience at Experts Exchange is different than what you will find anywhere else.
Try it out and discover for yourself.
30-day free trial. Register in 60 seconds.
Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.
Clarification: I am not free to build my string freely as in the above example.
I must use a function that provides the following string: "/aaa/bbb/ccc?y=v" .
'v' is an input to that function, so I could use other strings, e.g. '$v" will result in "/aaa/bbb/ccc?y=$v"
but I cannot create an expression of the form above.
There is no variable interpolation in javascript. I was just trying to show you how to use the eval() in javascript.
>>I must use a function that provides the following string: "/aaa/bbb/ccc?y=v" .
If don't understand what you mean by that. You are showing me a string but are mentioning "function"!
I doubt that this is what you are looking for:
function somefunction(v)
{
return "/aaa/bbb/ccc?y=" + v;
}
I guess I haven't managed to express the problem clearly.
I'll try again.
I have an function an HTML generator , that contains functions to generate URLs, e.g.
g('xxx') returns '/aaa/bbb?v=xxx'
I have no way to change this function g().
Now, I want to use this URL in a Javascript function where xxx will actually be a string determined at run time.
The Javascript function will have before the call to the function a line like
x = some string extracted from someplace
and then I want the URL to be '/aaa/bbb?v=<that string>.
In other words, during execution of the script I have to substitute the part on the right of the '=', with whatever is in variable 'x'.
The problem, that prevents me from using the suggestions above is that I am not free to write the url as an expression of my will. I need to use the g() function.
Still very confusing explanation but in regards to:
>>The problem, that prevents me from using the suggestions above is that I am not free to write the url as an expression of my will. I need to use the g() function.
Do you know what g() is doing? IF so, you can always redefine it - make your own. Javascript will happily let you override an existing function.
The function is not in Javascript , it's in Routes, and is used by a templating package Myghty. It generates the HTML on the server. The Javascript on the other hand is run in the browser when the page is loaded.
I am just looking for something that is syntactically more elegant than my current use of the string.replace function that replaces a stub string.
I guess it just can't be done in Javascript the way I would have liked to.
Business Accounts
Answer for Membership
by: hieloPosted on 2008-03-06 at 13:33:42ID: 21065007
eval("aaa" + v + ";");