I Need Javascript To Check A Field Is Empty Or Not

[getajobnowbiz]

There is a table contains 5 file fields that users can submit files (images) to our table.

 

In the report form (details page), I set 5 html blocks to display them one by one with responsive tag (width=70%) and they displayed finally and responsively.

 

I showed them in this way.

<img src "URL" width=70%"/>

 

However there is a problem comes. I need some JavaScript code to check and decide if I execute this html code. Otherwise there is a img icon showed if there is empty in that field

 

If there is a file, it will be executed.

If there is empty, it will not be executed.

 

Could anybody help

 

Thanks. Sam

[Xiang]

Hi Sam,

 

How are you doing?

 

I think, you can insert the following code to your HTML Blocks:

<script>
var firstfield = '[@field:file1]';
if(firstfield.length>0)
document.write("<img src='[@field:file1/]' width=70%/>");
else
document.write("<img src='DEFAULT URL' width=70%/>");
</script>

Insert your field instead of both [@field:file1] .

For me, it's better to use a Parameter picker and use the String format for the first line, and "File URL" for the "document.write" line.

 

I will be glad to hear if the code works or help, if it does not

[getajobnowbiz]

Thanks Xiang

 

I did it