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Javascript in an external file

Before asking this question, I must indicate that I tried to find EVERYTHING!

My question is how can I run javascript from an external file, and not inside my php / html. I am trying to do this.

    function ClearForm() {
      document.form.message.value="";
    }

    function comeBack(){
      if (document.form.message.value == "") {
         document.form.message.value="What on your mind?";
      }      
    }

I included <script type="text/javascript" src="javascript.js"></script>in <head>, and I have a file in the root directory of javascript.js, and my php file is in the root too, so this should not be a problem! But how can I run those code snippets that you see above in the javascript.js file, and not in my php file. It works fine if I have this in a php file, but I want to split things up!

I also tried to specify the form / input id field and then use getElementById in an external JavaScript file.

But, as you can see and hear, I'm new to JavaScript, so I'm obviously doing something wrong.

+3
3

Javascript.js, .

Javascript - , JS , /s .

"ClearForm()" "comeBack()" PHP .

+2

JS , PHP.

, , js

alert('js file found OK!');

document.form - , , :

document.forms[0]

, , , .

+1

<head> . .

, / ?

, javascript , < script src= "my_external_file.js" > </body> .

onXXX, onLoad() , onClick() , onSubmit() .. , .

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