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Global Variables

Declare variable outside of the function...

var oneVariable;

function setVariable(){
    oneVariable = "Variable set from within a function!";
}

function getVariable(){
    alert(oneVariable); // Outputs "Variable set from within a function!"
}

Or... attach it to the window object

function setValue() {
    window.myValue = "test";
}

function getValue() {
    alert(window.myValue); // "test" (assuming setValue has run)
}

Comments

  1. billy_cool
    Permalink to comment#

    don’t even need to specify “var” when you are declaring a global.

  2. Tim
    Permalink to comment#

    It’s bad practice to declare globals…

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Posting Code

We highly encourage you to post problematic HTML/CSS/JavaScript over on CodePen and include the link in your post. It's much easier to see, understand, and help with when you do that.

Markdown is supported, so you can write inline code like `<div>this</div>` or multiline blocks of code in in triple backtick fences like this:

```
<script>
  function example() {
    element.innerHTML = "<div>code</div>";
  }
</script>
```