javascript - jQuery val() doesn't work properly on dropdown menu -

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तो मुझे यह लिल कोड मिला: 

  & lt; script type = "application / javascript "& gt; $ ("फील्सेट & gt; चयन करें: प्रथम-के-प्रकार")। परिवर्तन (फ़ंक्शन () {var day = $ (this) .attr ('id') + "starttime"; $ ("#" + दिन) वैल ("2300");}); & Lt; / स्क्रिप्ट & gt;

मेरा कोड अधिक या कम काम करता है, यह वास्तव में चयनित विकल्प को बदलता है, लेकिन यह नेत्रहीन इसे बदल नहीं सकता (अगर मैं ड्रॉपडाउन पर क्लिक करता हूं तो मुझे लगता है कि नया विकल्प चुना गया है, लेकिन ऐसा लगता है कि कुछ भी नहीं बदला गया था)


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