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POHow can I dynamically add a paragraph to a document without overwriting everything else in javascript?
 

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  1. POHow can I dynamically add a paragraph to a document without overwriting everything else in javascript?
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    <p>I'm just learning how to write javascript, but i've already learned java. the difference in syntax is driving me nuts. i'm just doing a dumb little sample code to see if i can add a paragraph to the end of a page at the click of a button. but i can't seem to do it. i'm positive that i'm really close to achieving my goal though. i already know the button functions properly. there is a similar post that has helped me, but i can't seem to quite get to where i want. here's the javascript:</p> <pre><code>function displayDate() { //object that will hold newParagraph var iframe = document.createElement("iframe"); iframe.width = 400; iframe.height += 50; iframe.id ="iframe"; var comment = "woohooo! go me."; //var doc = iframe.contentDocument || iframe.document; var newParagraph = document.createElement('p'); newParagraph.textContent = comment; //doc.body.appendChild(newParagraph); iframe.appendChild(newParagraph); document.getElementById("updateDiv").appendChild(iframe); //the id updateDiv is in my html } </code></pre> <p>the iframe shows up as a blank box without the text. i cannot figure out how to get the text to appear in the iframe.</p> <p>here's the similar post if you're curious: <a href="https://stackoverflow.com/questions/2982425/adding-iframe-and-paragraph-elements-dynamically">Adding iframe and paragraph elements dynamically</a></p>
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    1. COFor me `var doc = iframe.contentDocument || iframe.document;` worked but `var doc = iframe.contentDocument || iframe.contentWindow.document;` didn't, and I was able to add an iframe to the page but then the new paragraph didn't appear for some reason though I didn't get any further errors. As an aside, any reason for the `+=` when setting the iframe height? As a further aside, what's the point of using an iframe in this scenario (other than to prove that you can)?
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      1. POHow can I dynamically add a paragraph to a document without overwriting everything else in javascript?
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    2. COi was only using the iframe because i'm new at javascript and i just followed the other example i found on this website. i'm sure there are other ways to do it but this is the only way i am aware of so far. and the += was because this is a sample code that i plan on using for a website to add comments to a page, so with each comment, another 50 px in height is added so the new comment can fit. that way it keeps growing to fit all the new comments.
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      1. POHow can I dynamically add a paragraph to a document without overwriting everything else in javascript?
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    3. COI changed the script up a little bit with your help @nnnnnn, and some other ideas online. the edited script appears above. but i can only get the iframe to appear as a blank box without newParagraph in it. any ideas on that?
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