How can I check whether a option already exist in select by JQuery

Question

How can I check whether a option already exist in select by JQuery?

I want to dynamically add options into select and so I need to check whether the option is alread

Answer 1

Although most of other answers worked for me I used .find():

if ($("#yourSelect").find('option[value="value"]').length === 0){
    ...
}

Answer 2

Another way using jQuery:

var exists = false; 
$('#yourSelect  option').each(function(){
  if (this.value == yourValue) {
    exists = true;
  }
});