Else if not working in javascript

Question

I'm working with an upload script,these lines of codes are not working.Here 'else if' condition doesn't works.It does not showing txt_file.png as a preview of file if a text file uploaded.

if (!file.type.match(/ image.*/)) {
    if (file.type.match(/ *.avi/)){
        myDropzone.emit("thumbnail", file, "images1/video_icon.png");
    } else if  (file.type.match(/ *.txt/)){
        myDropzone.emit("thumbnail", file, "images1/text_icon.png");
    }
    ....
}

Am i doing anything wrong ?Pls help me.Thank you..

else if condition doesn't works.It does not showing txt_file.png as preview of file if a text file uploaded. — Shyam3089
– Shyam3089, Commented Mar 8, 2014 at 16:02

dfsq · Accepted Answer · 2014-03-08 16:06:57Z

4

Regular expressions are not correct. Change

/ *.txt/

to

/.*\.txt/

or event better /.*\.txt$/.

Character * has a special meaning in regular expressions. So it has to be escaped if you use it like you did (however it would not work as expected anyway, because it would not match file extensions).

The same with *.avi. Also you would probably want to use test for this task.

More information here: Regular Expressions.

edited Mar 8, 2014 at 16:06

answered Mar 8, 2014 at 16:01

dfsq

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2 Comments

Shyam3089 Over a year ago

Oopz this is also not working.. :( ..In my previous code it shows video_icon if a .avi file uploaded but not showing text file icon if a text file uploaded..

dfsq Over a year ago

Hm, so the problem somewhere else. The code should work. jsfiddle.net/VP77t Make sure file.type is accurate.

Sebastian Stiehl · Accepted Answer · 2014-03-08 16:11:07Z

0

I would prefer to use the .search() function on a string and not the .match() because you don't care about a matching result you only need a boolean condition.

if (file.type.search(/\.avi/) !== -1){
    myDropzone.emit("thumbnail", file, "images1/video_icon.png");
}

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/search

answered Mar 8, 2014 at 16:11

Sebastian Stiehl

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