将图像 src 设置为 javascript 中的 url

Question

I have an image in my page. I want to change it's src in a script tag. this is code :

<asp:Image ID="ImgSecode" runat="server" ImageUrl="~/CImage.aspx" CssClass="lblSec"/>

in page CImage , an image will create. it works. but when i want to change the picture in script tag,it doesn;t work. here is javascript code :

document.getElementById('<%= ImgSecode.ClientID %>').src = "CImage.aspx";

In addition when i set the source to an image which is in solution it works.

Can you help me what should i do?

Answer 1

Assuming you use strictly JavaScript based solution you need to use SetAttribute method like this-

document.getElementById("<%=ImgSecode.ClientID %>").setAttribute('src', '<Full Web Path of your Image>');

Or if you are open to Jquery as well the use .attr .

$("[id='ImgSecode']").attr("src", "<Full Web Path of your Image>");

Also as per your question setting .aspx to src is by mistake I guess.