Feb 2, 2011 · The innerHTML property is part of the Document Object Model (DOM) that allows Javascript code to manipulate a website being displayed. Specifically, it allows reading and replacing everything within a given DOM element (HTML tag).

Dec 2, 2024 · Every time innerHTML is set, the HTML has to be parsed, a DOM constructed, and inserted into the document. This takes time. For example, if elm.innerHTML has thousands of divs, tables, lists, images, etc, then calling .innerHTML += ... is going to cause the parser to re-parse all that stuff over again. This could also break references to ...

function var1() { document.getElementById('text').innerHTML = 'hi'; } window.onload = var1; Note the casing of onload , as well as the missing parentheses after var1 . Share

The fact that innerHTML is a property with a getter and setter is why code like this is poor practice: for (var n = 0; n < something.length; ++n) { element.innerHTML += ", " + something[n]; } That's constantly building and then destroying and rebuilding a DOM tree and making a bunch of hidden function calls.

Aug 14, 2013 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand

May 19, 2017 · As we all know to change HTML element's HTML content using JavaScript "innerHTML" property is commonly used. This "innerHTML" property is used on an HTML element object like( document.getElementById("demo").innerHTML = 5 + 6; )

Dec 16, 2013 · innerHTML is normally used for div, span, td and similar elements. value applies only to objects that have the value attribute (normally, form controls). innerHTML applies to every object that can contain HTML (divs, spans, but many other and also form controls). They are not equivalent or replaceable. Depends on what you are trying to achieve.

@nipponese: Re-assigning a variable won't affect whatever it was previously assigned to. To write var myDiv = document.getElementById("my_div"); myDiv.innerHTML = ...; would set the innerHTML property on the object that both myDiv and document.getElementById("my_div") designate; but, for example, var myDiv = document.getElementById("my_div"); myDiv = document.getElementById("other_div"); would ...

Aug 11, 2017 · var elem = document.getElementById("button").firstChild.innerHTML; elem = "Enable"; You are storing the innerHTML to elem and are simply changing local variable in the code above. You can put everything in a single line and would not even need the temp variable. document.getElementById("button").firstChild.innerHTML = "Enable"; should also work ...

Dec 8, 2012 · I ran into this problem years ago, too. The problem is that when you use the innerHTML property to add HTML, after each update, the underlying engine will close unclosed tag (and fix other bad HTML) for you.