CODEWITHSUNDEEP
javascript
Damien-Amen
Damien-Amen

Reputation: 7512

Javascript variable access in HTML

Say I have the following JavaScript in a HTML page

<html>
<script>
    var simpleText = "hello_world";
    var finalSplitText = simpleText.split("_");
    var splitText = finalSplitText[0];
</script>

<body>
    <a href = test.html>I need the value of "splitText" variable here</a>
</body>
</html>

How do I get the value of the variable "splitText" outside the script tags.

Thanks!

Upvotes: 34

Views: 254207

Answers (7)

Hanna Rose
Hanna Rose

Reputation: 422

The easiest way to make it work would be to put img element using onerror, and no src. This is a dirty workaround... But it fits.

const data_ = {
  'd1'  : 'data_1',
  'd2'  : 'data_2',
};

function getData(n_, key_){
  n_.parentNode.innerHTML = data_[key_];
}
<div><img src onerror="getData(this,'d1')" /></div>
<div><img src onerror="getData(this,'d2')" /></div>

Upvotes: 1

James B
James B

Reputation: 1

The info inside the <script> tag is then processed inside it to access other parts. If you want to change the text inside another paragraph, then first give the paragraph an id, then set a variable to it using getElementById([id]) to access it ([id] means the id you gave the paragraph). Next, use the innerHTML built-in variable with whatever your variable was called and a '.' (dot) to show that it is based on the paragraph. You can set it to whatever you want, but be aware that to set a paragraph to a tag (<...>), then you have to still put it in speech marks.

Example:

<!DOCTYPE html>
<html>
    <body>
        <!--\|/id here-->
        <p id="myText"></p>
        <p id="myTextTag"></p>
        <script>
            <!--Here we retrieve the text and show what we want to write...
            var text = document.getElementById("myText");
            var tag = document.getElementById("myTextTag");
            var toWrite = "Hello"
            var toWriteTag = "<a href='https://stackoverflow.com'>Stack Overflow</a>"
            <!--...and here we are actually affecting the text.-->
            text.innerHTML = toWrite
            tag.innerHTML = toWriteTag
        </script>
    <body>
<html>

Upvotes: 0

Floris
Floris

Reputation: 46435

<html>
<head>
<script>
    function putText() {
        var simpleText = "hello_world";
        var finalSplitText = simpleText.split("_");
        var splitText = finalSplitText[0];
        document.getElementById("destination").innerHTML = "I need the value of " + splitText + " variable here";
    }
</script>
</head>
<body onLoad = putText()>
    <a id="destination" href = test.html>I need the value of "splitText" variable here</a>
</body>
</html>

Upvotes: 2

praneetloke
praneetloke

Reputation: 1971

Here you go: http://codepen.io/anon/pen/cKflA

Although, I must say that what you are asking to do is not a good way to do it. A good way is this: http://codepen.io/anon/pen/jlkvJ

Upvotes: 1

Iswanto San
Iswanto San

Reputation: 18569

Try this :

<script src="http://code.jquery.com/jquery-latest.min.js"></script>
<script type="text/javascript">
  $(document).ready(function () {
            var simpleText = "hello_world";
            var finalSplitText = simpleText.split("_");
            var splitText = finalSplitText[0];
            $("#target").text(splitText);
        });
</script>

<body>
<a id="target" href = test.html></a>
</body>
</html>

Upvotes: 3

cliffbarnes
cliffbarnes

Reputation: 1406

In raw javascript, you'll want to put an id on your anchor tag and do this:

<html>
<script>
var simpleText = "hello_world";
var finalSplitText = simpleText.split("_");
var splitText = finalSplitText[0];

function insertText(){
    document.getElementById('someId').InnerHTML = splitText;}
</script>

<body onload="insertText()">
<a href = test.html id="someId">I need the value of "splitText" variable here</a>
</body>
</html>

Upvotes: 1

kufudo
kufudo

Reputation: 2833

<html>
<script>
var simpleText = "hello_world";
var finalSplitText = simpleText.split("_");
var splitText = finalSplitText[0];

window.onload = function() {
       //when the document is finished loading, replace everything
       //between the <a ...> </a> tags with the value of splitText
   document.getElementById("myLink").innerHTML=splitText;
} 

</script>

<body>
<a id="myLink" href = test.html></a>
</body>
</html>

Upvotes: 26

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