Develop Reference

get the text entered in input box using java-script

I'm new to javascript I'm trying to create a web page where we can enter
name in an input box and using javascript's alert method show an alert box which says hello and the name that we entered in the input box
my code is
//html
<input id="test" type="text" name="nm" placeholder="Enter name">
<button onclick="fun(i dont know what to pass here in order to get the text entered in that text box)" type="button" name="button">Click here</button>
//javascript
//i tried like this...first
function fun(x) {
alert("HELLO" + x);
}
//i tried this...then
var x = document.getElementsById("test").value; [->here i also dono what to put.]
function fun(x) {
alert("HELLO" + x);
}

It should be getElementById instead of getElementsById. I hope this helps, and happy learning :)
Your code:
function fun() {
var textInTest = document.getElementById("test").value;
alert("Value entered" + textInTest);
}
<input id="test" type="text" name="nm" placeholder="Enter name">
<button onclick="fun()" type="button" name="button">Click here</button>

getElementById doesn't work at all

<form id="form1">
Title: <input type="text" id="title1" size="25"/><br/><br/><br/>
Description <input type="text" id="desc1" size="55"/><br/><br/><br/>
<input type="submit" value="Submit" onclick="doit();"/>
</form>
<script type="text/javascript">
function doit(){
var title = document.getElementById("title1").value;
var description = document.getElementById("desc1").value;
document.write("<h3>Title: " + title + "</h3>");
document.write("<h3>Description: " + description + "</h3>");
}
</script>
I need help with getElementById. My script takes the values the user typed in textboxes and when the user clicks submit the values are written to the page using document.write, however the code doesn't work as it expected.
<script type="text/javascript">
function doit() {
document.write("Do it function");
var title = document.getElementById("title1").value;
var description = document.getElementById("desc1").value;
document.write("<h3>Title: " + title + "</h3>");
document.write("<h3>Description: " + description + "</h3>");
}
</script>
The execution doesn't even reach the first line of the function. In the button I have:
<input type="submit value="submit" onclick="doit();"/>

If:
<input type="submit value="submit" onclick="doit();"/>
is indeed what you have, you're missing a quote (as should be evident by the syntax coloring, reason enough to make sure you use an editor that provides such coloring).
It should instead be:
<input type="submit" value="submit" onclick="doit();"/>
You should also be aware that document.write(), if the document has already been closed, will automatically open and clear the document, so your first write may make the controls with those IDs disappear, depending on the structure of your HTML.

Kindly change your html like this
<input type="submit" value="submit" onclick="doit();"/>

CKeditor with multible dynamic textareas

I have a forms which allows multiple steps to be submitted. When a user clicks "add step" another textarea appears. I am using CKeditor. It works great of the first iteration, but on all subsequent ones, it shows a standard text area. Here is my code:
<form method="post" action="process_project.php">
<b>Steps for your project:</b>
<div> </div>
Step 1
<div id="divWho">
<textarea name="projSteps[]" class="steps" id="1" rows="10" cols="60"></textarea>
</div>
<div> </div>
<input type="button" value="Add project step" onClick="addTextArea();">
<input type="submit" name="submit" value="submit" />
</form>
<script type="text/javascript">
var counter = 1;
var limit = 11;
function addTextArea() {
if (counter == limit-1) {
alert("You have reached the limit of adding " + counter + " project steps");
return false;
}
else {
var newdiv = document.createElement('div');
newdiv.innerHTML = "Step " + (counter + 1) + " <br><textarea name='projSteps[]' id=counter rows='10' cols='60'>";
document.getElementById('divWho').appendChild(newdiv);
counter++
return true;
}
}
</script>
<script> CKEDITOR.replace('1');</script>
How can I make each new dynamically created text areas also use CKeditor? I have been working on this for hours and I am stumped.

I think you need to move CKEDITOR.replace('1'); inside the addTextArea() method enclosed in the else block before the return statement.
And also if you hard code the replace parameter to '1', it will only convert the first instance of textarea with id 1 to CKEditor and ignore others. Generate an Id dynamically and pass it to repalce method. Something like below,
var step = 'step'+counter;
div = <textarea name='projSteps[]' id=step rows='10' cols='60'>;
CKEDITOR.replace(step);
I haven't written the second step completely, I guess you can modify it as you need.
I'm working on a similar functionality and this approach works for me.

use like this.
<textarea class="ckeditor" name="abc1"</textarea>
and in JS add this
CKEDITOR.replaceAll( 'ckeditor' );
I hope it will work for all the textareas.

How to show the text from a form with button?

I am studying web design for first year in university. We have just started and I am trying to do different things with my basic knowledge of html. My question is how can it show the text entered in a form after clicking a button? I tried something but it's not working.
This is my wrong code:
<body>
<script>
function name(name1)
{ alert ("Your name is" + name1)
}
</script>
Enter a name:
<form> <input type="text" name="name1"/></form> </br>
<button onclick="name(name1)">Click!</button>
</body>

You can to use querySelector, to get the element based using attribute selector.
<script>
function yourMethod(name1) {
var inputName = document.querySelector('input[name=' + name1 + ']').value;
console.log("Your name is: " + inputName)
}
</script>
Enter a name:
<input type="text" name="name1" />
<button onclick="yourMethod('name1')">Click!</button>

Try this
<body>
<script>
function name1(name)
{
alert("Your name is " + name);
}
</script>
Enter a name:
<form> <input type="text" name="name" id="name"/></form> </br>
<button onclick="name1(document.getElementById('name').value)">Click!</button>
</body>

try this
<body>
<script>
function name()
{
var value = document.getElementById('name1').value;
alert("Your name is" + value);
}
</script>
Enter a name:
<form>
<input type="text" id="name1" name="name1" />
</form>
</br>
<button onclick="name();">Click!</button>
</body>

make onclick="name()"
then function name(){ alert( document.querySelector("input[name='name1']").value ) }
what it does is when the button gets clicked, the function name is called. This will alert the text by finding the element with the querySelector. The query selector returns an element, if found. You can access every elements attribute with element.attributeName.
In this case you want to use querySelecor because querySelectorAll will return a nodelist. Where querySelector will return only an element

Generate code from user input

I am trying to make a simple code generator using inputs added by the user.
It will go something like this:
"predefined code" + UserInput1 + "predefined code" + "UserInput2"
I assume I will need to assign variables to the UserInput which will change depending on what it writes in the text box.
I will need also a function that will show the output as I press the button in a text area
But I lack the skills to compose it since I'm a very started in JavaScript.
Thank you in advance for your help!

Try below code
DEMO
<input type="text" id="a">
<input type="text" id="b">
<div id="result"></div>
<input type="button" value="See Code" onclick="magicCode();">
function magicCode() {
document.getElementById("result").innerHTML = "Hello " + document.getElementById("a").value + " Welcome " + document.getElementById("b").value;
}