How do I replace a bit of text with string variable in javascript?

Question

I know this is a really simple question, but I need to replace this bit of text in a paragraph with a variable every time an even fires.

The markup looks like this

Answer 1

You could create a function that looks something like this.

function replaceTitle (replaceText) {
    document.getElementById("heading").getElementsByTagName("h1")[0].innerHTML = replaceText;
}

If you are using jQuery it could look more like this.

function replaceTitle (replaceText) {
    $("#heading h1").html(replaceText);
}

Then you call the function like this

replaceText(yourVariable);

It would probably be better to give your

tag an id or a class so you can reference it directly, but I am going to assume that you have good reason for not doing so.