php - Need to take two text field values and add together to another field -

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  & lt; p & gt; प्रथम नाम & lt; input type = "text" name = "first_name" & gt; अंतिम नाम & lt; इनपुट प्रकार = "टेक्स्ट" नाम = "अंतिम_नाम" & gt; & lt; / p & gt; & Lt; इनपुट प्रकार = "छिपा हुआ" नाम = "स्क्रीन_नाम" मान = "प्रथम_नाम + अंतिम_नाम" & gt;

मैं पहले_नाम और अंतिम_नाम फ़ील्ड में क्या लिखा था और स्क्रीन_name पर उन्हें एक साथ जोड़ते हैं, इसलिए जब फ़ील्ड सबमिट की जाती है, तो यह स्क्रीन_नाम फ़ील्ड के लिए उचित मूल्यों को इनपुट करता है?

मैं या तो एक php या jQuery के रिज़ॉल्यूशन के लिए देख रहा हूं।

क्या यह चाल है? 

  & lt;? Php $ screen_name = $ _POST ["first_name "]।" "। $ _ POST [" last_name "]; ? & Gt; & Lt; इनपुट प्रकार = "छिपा हुआ" नाम = "स्क्रीन_नाम" मान = "& lt;? Php प्रिंट $ screen_name;? & Gt;" / & Gt; PHP के लिए (सर्वर साइड पर):  
 $

स्क्रीननाम = $ _POST ["प्रथम_नाम"]। "" $ _ POST ["last_name"]

jQuery के साथ (क्लाइंट साइड पर) आपको फ़ील्ड में आईडी को आसानी से एक्सेस करना होगा: 

  & lt; p & gt; प्रथम नाम & lt; इनपुट प्रकार = "लेख" नाम = "प्रथम_नाम" id = "first_name" & gt; अंतिम नाम & lt; इनपुट प्रकार = "टेक्स्ट" नाम = "अंतिम_नाम" id = "last_name" & gt; & lt; / p & gt; & Lt; इनपुट प्रकार = "छिपा हुआ" नाम = "स्क्रीन_नाम" मान = "प्रथम_नाम + अंतिम_नाम" id = "screen_name" & gt;

और फिर फ़ॉर्म पर सबमिट करें (या इनपुट फ़ील्ड बदलें ईवेंट) स्क्रीन_नाम फ़ील्ड मान सेट करें: 

  var screenNameVal = $। ("# First_name ") .attr (" value ") +" "+ $। (" # Last_name ")। Attr (" value "); । $ ( "# SCREEN_NAME") attr ( "मूल्य", screenNameVal)।

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