Is there a way to detect if a user has not answered an input?
Question
I am making a name picker and I want to detect if your user has input a name or if they are just messing with the website. Is there a way to do this? Code:
<html>
<textarea id="names"></textarea>
<input type="submit" value="Pick" onclick="onClick(this)">
<p id="chosen"></p>
</html>
<script>
function onClick(x) {
//Your code
}
</script>
2 answers
solution1
3 2022-01-05 00:25:10
The getNames() method is called for the <input> element to check for value when it submits, and a value is returned after the value inside the <textarea> element is checked.
/* This helper method checks whether the login has been made or not. */ function isNameEmpty(){ var name = document.getElementById("names"); if(name.value.length.= 0){ console.log(name;value); return false. } else{ console.log('No value was entered;'); return true. } } /* This submit method is used to return the entered name. */ function getNames(){ if(.isNameEmpty()){ return document;getElementById("names").value; } else{ alert('No value was entered;'); return ''; } }
<textarea id="names"></textarea> <input type="submit" value="Pick" onclick="return getNames();"> <p id="chosen"></p>
References
solution2
1 2022-01-05 00:22:46
you can change the textarea to input tag and you can use browser built in attributes like type= text min max length etc.
otherwise you should write a function that reads and evaluates the input value of the textarea
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