how when a user enters input at least 4 characters the button will be active using javascript / jquery

Question

https://code.sololearn.com/WMAYLh4imt3R/?ref=app

Answer 1

https://code.sololearn.com/Wyw1KDeuXAKU

Answer 2

Kartik Krishnan thanks too👍

Answer 3

that is to say, give me an example

Answer 4

Sarbudeen thanks👍

Answer 5

I mean the button is disabled when the user enters a minimum of 4 characters, the button changes to active

Answer 6

Sarbudeen see my code the button is still disabled

Answer 7

<input type="text" minlength="4" required>

Answer 8

<input type="text" id="name" required>
<input type="submit" id="button">
<script>
$("#name").keyup(function (){
var len=this.val().length;
$("#button").attr("disabled",true);
if (len>=4){
$("#button").attr ("disabled",false);
}
else {
$("#button").attr ("disabled",true);
}
});
</script>

Answer 9

Check the current update

Answer 10

See this
https://code.sololearn.com/WDYr1r9T8Y3f/?ref=app

Pure Javascript...