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javascript on onclick="return func();" stop working after first element by id

<button onclick="return validateEdit();" class="btn btn-primary submit-btn">Submit</button>
function validateEdit() {
var name = document.getElementById("sftName").value;
aler("name")
var startTime = document.getElementById("startTimeEdit").value;
aler("start time")
}
The function execute first alert and don't show second aler.I am using also:
$('#edit_shift').on('show.bs.modal', function (event) {
var anchor = $(event.relatedTarget) // Button that triggered the modal
var id = anchor.data('whatever')
var from = anchor.data('fromtime')
var modal = $(this)
$("#sftName").attr("value", name);
$("#startTimeEdit").attr("value", from);
In the another form is working fine.
Edit: start time with value and without value is not working in both cases.
I am full zero at javascript.

There are some typo error. Make sure its alert in your code and not aler. Also html content you posted having only button, whereas you are trying to fetch two elements with id sftName and startTimeEdit, make sure those elements are there in your code.
For better understanding can you recreate above issue on codepen.

Save and open the content of a textarea

i'm working on a text editor as part of a school project and i'm having a small issue with my save and open code.
Here are my buttons:
<button id="gu" onclick="save()">Save</button>
<button id="ab" onclick="open()">Open</button>
Here's my textarea:
<textarea name="comment" rows=30 cols=101 id="texto"></textarea>
And here's my javascript functions:
function save(){
gu = document.getElementById("texto");
localStorage.setItem("texto",gu);
console.log(texto+"="+gu);
}
function open(){
console.log("Abierto")
document.getElementById('texto').innerHTML=gu;
}
My goal is that if write something and then press the "save" button, the content inside my textarea is saved, and if i press the "open" button it shows what i wrote on the textarea.
Any idea on how to fix my code?
Sorry if my english is bad.

Here you go: https://jsfiddle.net/cinerobert/qwgv18r5/
function save()
{
localStorage.setItem("someitem", document.getElementById("texto").value);
document.getElementById("texto").value = "";
console.log(texto + "=" + gu);
}
function retrieve(){
console.log("Abierto")
document.getElementById("texto").value = localStorage.getItem("someitem");
}
You can't use open() as a function name because it's already a built-in function in javascript, so I changed it to retrieve(). See here: http://www.w3schools.com/jsref/met_win_open.asp
Is there some reason you're required to use setItem()? Using a variable (gu) and setItem is redundant. It would work either way.
Also to get and set the text inside a text area I you need to use value().
I also changed the save() function so that it clears the textbox, so that you can see something happen when you click retrieve().

Below are the things need to be done
function save()
{
gu = document.getElementById("texto");
localStorage.setItem("texto",gu.innerText); //here you were saving the dom object not the text inside
console.log(texto+"="+gu.innerHTML);
}
function open()
{
console.log("Abierto")
document.getElementById('texto').innerHTML=localStorage.getItem("texto"); //here you need to get the text from your local storage
}

Uncaught ReferenceError: printProducts is not defined [duplicate]

This question already has an answer here:
jsFiddle: no connection between html and js? Can't call simple function from button? [duplicate]
(1 answer)
Closed 6 years ago.
I keep getting this error when i inspected the element of my button. The button is suppose to give a print view to page.
HTML Code:
<button class = "hidden-print" onclick = "printProducts()">Print Products</button>
Javascript Code:
function printProducts(){
window.print();
}
Attached here is my code live in jsFiddle:
https://jsfiddle.net/PochMendoza/scj0q0dk/

"In JSFiddle, when you set the wrapping to "onLoad" or "onDomready", the functions you define are only defined inside that block, and cannot be accessed by outside event handlers."
Easiest fix is to change:
function something(...)
To:
window.something = function(...)
---Niet The Dark Absol
For your example, you want to define the onclick method of a button. That's really easy with JavaScript, we just need to give the button an id in the HTML, so that we can find it in our JavaScript code.
Change this:
<button class = "hidden-print" onclick = "printProducts()">Print Products</button>
To this:
<button id="myButton" class="hidden-print">Print Products</button>
Note that we no longer need the onclick="printProducts()" part anymore.
Now we need to set the printProducts function to run when the button is clicked. This can be done like so:
document.getElementById('myButton').onclick = printProducts;
Start edit
This code needs to be placed in the onload function though, to properly run.
Do that like so:
window.onload = function() {
document.getElementById('myButton').onclick = printProducts;
}
End edit
And the printProducts function remains the same.
Working JSFiddle
document.getElementById('myButton').onclick = printProducts;
function printProducts(){
window.print();
}
<button id="myButton" class="hidden-print">Print Products</button>

Javascript function not being called, function may be dead?

I'm trying to call a js function when a button is clicked in html, but it won't run. The button is being clicked, because I tested a prompt and it showed up, but when we put a function there it wont run...
function NextLesson(){
prompt("myprompt");
document.getElementById("Kek23").innerHTML = <c:outvalue= "${lesson.GetNextLesson()}"/>";}
Then I call the method in a button
<p style="font-size: 4em" id ="Kek23"></p>
<button onclick = "NextLesson();" value = "Next"/>
We've found that when a function gives an error, javascript declares the entire function as dead, but I don't know the error

This works:
You had a couple syntax issues that was killing your function- including not completely wrapping your innerHTML content in quotes - and your Button element was not using the correct syntax.
<p style="font-size: 4em" id ="Kek23"></p>
<button onclick = "NextLesson();" value = "Next">Next</button>
<script>
function NextLesson(){
prompt("myprompt");
document.getElementById("Kek23").innerHTML = "<c:out value= ${lesson.GetNextLesson()}/>"
};
</script>
Fiddle

Errors corrected in the 2nd line of function:
function NextLesson(){
prompt("myprompt");
document.getElementById("Kek23").innerHTML = "<c:out value= '${lesson.GetNextLesson()}'/>";
}

Button.onclick automatically triggers, then will not trigger again

I have a script, which I'm using to try and display only one section of a webpage at a time.
function showMe(id){ clearPage(); changeDisplay(id, "block"); console.log(id)}
Currently, I'm using buttons to change which section is displayed.
var aBtn = document.getElementById("a-btn");
var otherBtn = document.getElementById("other-btn");
aBtn.onclick=showMe("a-btn-section-id");
otherBtn.onclick=showMe("other-btn-section-id");
However, when I load the page, the following happens:
I see the function attached to each button activate once in sequence in the console.
The page refuses to respond to further button inputs.
Testing with the console shows that showMe() and the functions it calls still all work properly. I'm sure I'm making a very basic, beginner mistake (which, hopefully, is why I can't find this problem when I Google/search StackOverflow/read event handling docs), but I'm at a loss for what that mistake is. Why would my script assume my buttons are clicked on load, and why won't it let me click them again?

You're calling the function an assign the value to onclick property instead of attach the function, try defining your onclick property as:
aBtn.onclick=function(){showMe("a-btn-section-id");};
otherBtn.onclick=function(){showMe("other-btn-section-id");};
Try the follow jsfiddle:
function showMe(id){ // some stuff..
console.log(id)
}
var aBtn = document.getElementById("a-btn");
var otherBtn = document.getElementById("other-btn");
aBtn.onclick=function(){showMe("a-btn-section-id");};
otherBtn.onclick=function(){showMe("other-btn-section-id");};
<input type="button" value="a-btn" id="a-btn"/>
<input type="button" value="other-btn" id="other-btn"/>
Hope this helps,