javascript - How to check if a value exist in select box -

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is there method other running loop check if value exists in select box using javascript?

i looking document.getelementbyid('selbox').valueexists('myval');

you can't extend methods select-element has. there not solution without function check existence of value in select.

a "solution" without loop following...

function selecthasvalue(select, value) {     obj = document.getelementbyid(select);      if (obj !== null) {         return (obj.innerhtml.indexof('value="' + value + '"') > -1);     } else {         return false;     } }

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