how to check if class exists in jquery code example
Example 1: detect if an element has a class jQurey
$("#EL_ID").hasClass("CLASS_NAME");
Example 2: jquery check if a class exists
if ($(".mydivclass")[0]){
// Do something if class exists
} else {
// Do something if class does not exist
}
Example 3: jquery hasclass
$( "#mydiv" ).hasClass( "foo" )
Example 4: if a class exists jquery
if ($(".mydivclass").length){
// Do something if class exists
} else {
// Do something if class does not exist
}
Example 5: jquery check if element has class starting with
if(!$(this).is('[class*="answerbox"]')) {
//Finds element with no answerbox class
} else {
//The element has already an answerbox class
}
Example 6: jquery select input value empty and hasclass
$('.check-fields').on('click', function () {
var reqlength = $('.required-entry').length;
console.log(reqlength);
var value = $('.required-entry').filter(function () {
return this.value != '';
});
if (value.length>=0 && (value.length !== reqlength)) {
alert('Please fill out all required fields.');
} else {
alert('Everything has a value.');
}
});