passing parameter from aspx to javascript issue

Question

I write code in asp.net backend to pass parameter, however, I found that it does not work if the parameter is so long. In the backend:

folderList.InnerHtml += "<span onclick='AttachId(" + folder.Id + ")'>" + folder.DisplayName + "</span>";

In the frontend:

function AttachId(id) {
            $("[id$='hf_FolderId']").val(id);
            $("[id$='btn_Move']").click();
        }

The parameter folder.Id="AQMkAGQ2YzBkYjkxLWZjNTYtNDAwAS1hZWY2LWQ3OWI2MDkxZTE2ZAAuAAAD82EfyZcOUkeLGnLBkE1iOgEA04D3/FOc8ES6LdlZ5/AXHgAAAQRaEQAAAA=="

If I change it to "123" it works. Any idea?

Or maybe you could let me know a better way to pass parameter from back to front. Many thanks.

gilly3 · Accepted Answer · 2011-08-12 23:15:25Z

1

Quotes. 123 is a number so JavaScript is fine with it. If you try abc, I bet it fails as well. Add quotes to your string in the markup and it should work.

folderList.InnerHtml += "<span onclick='AttachId(\"" + folder.Id + "\")'>" + folder.DisplayName + "</span>";

Using string concatenation to generate HTML is always error prone. Remember, the JavaScript string needs to be quoted as does the HTML attribute it is contained in. Since you are using single quotes for your attribute, you must use either double quotes or htmlencoded single quotes for your JavaScript. This should work:

"... onclick='AttachId(\"" + folder.Id + "\")'>" + ...

edited Aug 12, 2011 at 23:15

answered Aug 12, 2011 at 23:05

gilly3

92.6k26 gold badges148 silver badges179 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Steven Zack Over a year ago

you are right, if change to abc, still fails. but do you mean to write like ipr101 suggests? still fails.

rlb.usa · Accepted Answer · 2011-08-12 23:02:20Z

0

Actually, I believe the problem isn't with the length of your paramater, but instead with the included quote marks ".

Try escaping them.

answered Aug 12, 2011 at 23:02

rlb.usa

15.1k17 gold badges86 silver badges130 bronze badges

1 Comment

Steven Zack Over a year ago

remove single quote before and after AttachId()? No lucky.

ipr101 · Accepted Answer · 2011-08-12 23:04:01Z

0

<span onclick='AttachId(" + folder.Id + ")'>

I think this should be changed to -

<span onclick='AttachId('" + folder.Id + "')'>

So the variable is passed to the function as a string.

answered Aug 12, 2011 at 23:04

ipr101

24.2k8 gold badges61 silver badges62 bronze badges

Collectives™ on Stack Overflow

passing parameter from aspx to javascript issue

3 Answers 3

1 Comment

1 Comment

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

1 Comment

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related