jquery - How to know that a data is among a select element option value? -

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एक फ़ील्ड का मान है, & lt; input type = "hidden" id = "x" मान = "4" & gt; , और एक चुनें तत्व: 

  & lt; id = "produit" name = "produit []" बहु = "एकाधिक" आकार = "10" आवश्यक & gt; & Lt;? Php के लिए ($ i = 0; $ i & lt; $ डेटा ['उपयोगकर्ता'] ['प्रोडक्ट्स'] ['cnt']; $ i ++) {? & Gt; & Lt; विकल्प मान = "& lt;? Php ईको $ डेटा ['उपयोगकर्ता'] ['प्रोडक्ट्स'] [$ i] ['कोड']? & Gt;" & gt; & lt;? Php $ डेटा ['उपयोगकर्ता'] [ 'produits'] [$ i] [ 'lib']; ? & Gt; & lt; / विकल्प & gt; & Lt;? Php}? & Gt; & Lt; / चयन & gt;   
 यह कैसे पता चलेगा कि क्षेत्र का मान चयन के विकल्प मानों में से एक है?   
 
 
 इनपुट फ़ील्ड मान प्राप्त करें और इसे चुनें विकल्प मान के साथ उपयोग करें, जैसे:  
  var xval = $ ("# x")। Val (); // छिपी हुई इनपुट फ़ील्ड मान // का चयन करें विकल्प जिसका मान xval var selOptionLen = $ ('# produit विकल्प [value = "' + xval + '"]')। लंबाई; यदि (selOptionLen) {// मौजूद है}

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