Finding and replacing text in HTML not doing anything [duplicate]-CodePudding

I want to find and replace specific words in a text area using user-specified keywords.

This is what my HTML document looks like:

Message: </br>
    <textarea name="text" id="message" rows="3" col="20">Hello 202109</textarea> </br></br>
    Find: <input type="text" name="find" id="find" size="15"> Replace: <input type="text" name="replace" id="replace" size="15"> <br/>
    <button type="button" onclick="findAndReplace()">Find and Replace</button> <br/>

And I'm using this for my Javascript function:

function findAndReplace() {

let find = document.getElementById("find").innerHTML;
let replace = document.getElementById("replace").innerHTML;
let text = document.getElementById("message").innerHTML;
document.getElementById("message").innerHTML = text.replace(find, replace);

}

However, when I open my webpage and try clicking on the "Find and Replace" button nothing happens and no text gets replaced. Inspecting the webpage also shows no errors whatsoever.

What am I doing wrong? Any help would be appreciated.

CodePudding user response：

That's because you're using .innerHTML instead of .value. .innerHTML gets the inner markup of the element, and can't be used on inputs and textareas. .value is the property you're looking for.

CodePudding user response：

This is the solution to your problem :)

function findAndReplace() {

let find = document.getElementById("find").value;
let replace = document.getElementById("replace").value;
let text = document.getElementById("message").value;
document.getElementById("message").value = text.replace(find, replace);

}

<textarea name="text" id="message" rows="3" col="20">Hello 202109</textarea> </br></br>
Find: <input type="text" name="find" id="find" size="15"> Replace: <input type="text" name="replace" id="replace" size="15"> <br />
<button type="button" onclick="findAndReplace()">Find and Replace</button> <br />

There is also this interesting guide: https://superuser.com/questions/1037389/innerhtml-vs-value-when-and-why