Edit javascript attribute in html

Question

I am new in java script and now I am stuck with a little problem. I searched over the internet but I did not get the answer so I have to post the question.

Problem: I wrote var x=1; in jack.js and I linked it with my HTML file. Now I want to call that var x=1; in HTML page then I want to change it to var x=2;. So that the result will be shown 2 not 1 in HTML page.

Can anybody suggest me what should I need to do?

Jarek Piórkowski · Accepted Answer · 2014-11-20 22:08:31Z

3

The variable will be available within the document, so just include a <script> tag within the HTML.

<script>
x = 2;
document.write(x);

// or:
$('#targetDiv').text(x);
</script>

Note this has to be after you include jack.js.

answered Nov 20, 2014 at 22:08

Jarek Piórkowski

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5 Comments

Rohitz -zust stay here Over a year ago

thanks for reply. I want to ask you that If I want to save that x=2 in that jack.js file from html? then what i need to do?

Jarek Piórkowski Over a year ago

The code in the js file will receive whatever the value of x is during execution. So for code that runs on page load, x will be 1 because HTML below has not yet changed it. Code that runs later, like a button click event handler, will see the new value of x.

Rohitz -zust stay here Over a year ago

thanks for reply.I got it now but I want to know that can we change any attribute value in a jack.js file forever from html page?

Jarek Piórkowski Over a year ago

Sorry, I'm not sure what that means. You can change any global variable like you did for x. But if the js file has some variables within limited scope (like in a function or encapsulation) these aren't accessible outside of the scope and you will not be able to change them from within the HTML file.

Rohitz -zust stay here Over a year ago

no problem, thanks for help. I tried it and its working. thanks again

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