document.getElementByID not a function Quick fix [closed] - javascript

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I'm studying for an exam and I'm doing some sample problems by myself. I've ran into the Uncaught TypeError: document.getElementByID is not a function problem.
Here is my code:
<script>
function checkValidity(){
//Create variable to check for errors
var input = document.getElementByID('myID').value;
if(input < 0){
document.getElementByID('errorCheck').textContent = 'The value must be a positive integer';
}else if(ifNaN(input)){
document.getElementByID('errorCheck').textContent = 'Not a number. The value must be a positive integer.';
}else if(input == null){
document.getElementByID('errorCheck').textContent = 'Please input a value.';
} else{
document.getElementByID('errorCheck').textContent = 'Valid number.';
}
}
document.getElementByID('validateid').onclick = checkValidity;
It yells at me at this line of code saying it is invalid.
document.getElementByID('validateid').onclick = checkValidity;
I know its a small mistake. I'd appreciate if someone pointed it out.

You're looking for document.getElementById, lowercase d.

Looks like a typo. You need to do:
document.getElementById('errorCheck')
with lowercase 'd'. Here is a reference link.

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Closed 1 year ago.
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I have a JS function which checks if a user entered string is zero.
if (str.legth = 0) {
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THanks
You've misspelled "length" and you need "==" instead of "=" to check for equailty rather than assigning a value.
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Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers.
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Closed 2 years ago.
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I wanted to compare the value of variable which is getting the URL of current page with the hard coded string. Though the values are same I am getting false in the comparison. Not able to guess what is happening. Below is the code:
var loc = String('"' + window.URL + '"');
if("Here I am specifying entire URL manually exactly same which I am getting in loc"==String(loc))
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Closed 6 years ago.
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I'm creating a site and i needed to do some js. I'm not that good with it but tought i would figer it out. Not. I created a for loop but it does not run.
function order(user,product){
var index;
for(var i = 0; i<users.lenght; i++){
if(user == users[i]){
index = i;
break;
}
}
var budget = budgets[index];
alert(budget);
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Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers.
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Closed 6 years ago.
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So, me and a few friends are making a text adventure in JavaScript. in it, there is a possibility of the player using a heal spell, which runs the following code:
function heal() {
alert('You chant some ominous-sounding words, and your wounds heal');
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burn();
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}
Error Messages:
Firefox:
/*
Exception: SyntaxError: missing ; before statement
#Scratchpad/1:2703
*/
Chrome:
SyntaxError: Unexpected identifier.
Why is this error showing up? How do I fix it?
You cant have spaces in functions
Choose Spell();
Check your function declaration for ChooseSpell and any other occurances, and change them to a valid function name, like chooseSpell()

JavaScript match() function does not give output [closed]

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This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers.
Closed 7 years ago.
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In JavaScript code I use regular expression match() function to find pattern and show the result, but it does not give a proper answer, means finding [i] character in giving sentences
<button onclick = "searchPattern()">pattern</button><br>
<p id = "demo"></p>
<script>
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}
</script>
Read your JavaScript console
Uncaught ReferenceError: patt is not defined
You changed your variable name from paat to patt half way through your code.

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