how to include js file in php

Question

I have a problem with an js file in php  if i include it like this     gt   lt script type  text javascript  href  file js  gt  lt  script gt   lt  php   the file isn t included and i get an error that the function isn t defined   When i try it this way    lt script type  text javascript  gt  document write   lt script type  text javascript  src  datetimepicker css js  gt  lt  script gt      lt  script gt    the first  tag in the document write function closes  lt script type  text javascript  gt   what is the correct way to do this   thanks   sebastian

User · Accepted Answer

PHP is completely irrelevant for what you are doing. The generated HTML is what counts.

In your case, you are missing the src attribute. Use

 <script type="text/javascript" src="file.js"></script>

User · Answer

I tried this  I ve got something like   script type  text javascript  src  createDiv php id   script  AND In createDiv php I Have  document getElementbyid imgslide  appendchild imgslide5  innerHTML    php echo  helloworld      And I got supermad because the php at the beginning of the createDiv php I made the  helloWorld php variable was formatted cut and paste from the html page  But it wouldn t work cause Of whitespaces was anyone gonna tell anyone about the whitespace problem cause my real php whitespace still works but not this one

User · Answer

Its more likely that the path to file js from the page is what is wrong  as long as when you view the page  and view-source you see the tag  its working  now its time to debug whether or not your path is too relative  maybe you need a   in front of it

User · Answer

In your example you use the href attribute to tell where the JavaScript file can be found  This should be the src attribute     gt   lt script type  text javascript  src  file js  gt  lt  script gt   lt  php   For more information see w3schools

User · Answer

If you truly wish to use PHP  you could use  include  file php     or  require  file php     and then in file php  use a heredoc  amp  echo it in   file php contents   some js code  lt  lt  lt  code function myFunction        Alert  Some JS code would go here        code    At the top of your PHP file  bring in the file using either include or require then in head  or body section  echo it in   lt  php require  file php     gt   lt html gt   lt head gt   lt  php echo  some js code    gt   lt  script gt   lt  head gt   lt body gt   lt  body gt   lt  html gt    Different way but it works  Just my   02

User · Answer

There is no difference between HTML output by PHP and a normal HTML page in this regard   You should definitely not have to do the document write  Your JS is not related to your PHP  so there must be some other error  like the file path  in the first example   On a side note  you ll have problems using  lt  script gt  within a script  The HTML parser sees the closing script tag when scanning the JS before parsing it  and becomes confused  You see people doing things like   lt     script  for this reason   Edit   As T J  Crowder pointed out  actually you need to change  href to src in the  lt script gt  tag  Oops  actually Pekka pointed that out in his answer itself  so actually adding it here is totally superfluous

User · Answer

Pekka has the correct answer  hence my making this answer a Community Wiki   Use src  not href  to specify the file   Regarding      When i try it this way    lt script type  text javascript       document write   lt script type  text javascript  src  datetimepicker css js   lt  script      lt  script       the first tag in the document write function closes    what is the correct way to do this    You don t want or need document write for this  but just in case you ever do need to put the characters  lt  script gt  inside a script tag for some other reason  You do that by ensuring that the HTML parser  which doesn t understand JavaScript  doesn t see a literal  lt  script gt   There are a couple of ways of doing that  One way is to escape the   even though you don t need to    lt script type  text javascript  gt  alert   lt   script gt        Works  HTML parser doesn t see this as a closing script tag          --- note the seemingly-unnecessary backslash  lt  script gt    Or if you re feeling more paranoid    lt script type  text javascript  gt  alert   lt  scr     ipt gt        Works  HTML parser doesn t see this as a closing script tag  lt  script gt       since in each case  JavaScript sees the string as  lt  script gt  but the HTML parser doesn t

User · Answer

I found a different solution that I like   lt script gt       lt  php require once  quot  path to file js quot     gt   lt  script gt   Also works with style-tags and  css-files in the same way

User · Answer

I have never been a fan of closing blocks of PHP to output content to the browser  I prefer to have my output captured so if at some point within my logic I decide I want to change my output  after output has already been sent  I can just delete the current buffer   But as Pekka said  the main reason you are having issues with your javascript inclusion is because your using href to specify the location of the js file where as you should be using src   If you have a functions file with your functions inside then add something like   function js link  src        if file exists  my html root      src                   we know it will exists within the HTTP Context         return sprintf   lt script type   text javascript   src    s   gt  lt  script gt    src             return   lt  -- Unable to load      src    -- gt        The n in your code without the need for closing your blocks with   gt  you can just use   echo js link  jquery 1 6 main js

[php] how to include js file in php?

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