javascript - Calling jQuery functions using call or apply -

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मेरे पास निम्न HTML है: 

  & lt; input type = "text" & gt;   
 मैं इस इनपुट का मान सेट करना चाहता हूं:  
  $ ("इनपुट")। Val.call (यह, "हाय");   
 jQuery एक त्रुटि फेंकता है:  
 
  अनक्यूट टाइप एरर: अनिर्धारित कोई फ़ंक्शन नहीं है    < p> यह क्यों हो रहा है? मैं  लागू  या  कॉल   
 का उपयोग कर jQuery फ़ंक्शन को कैसे कॉल कर सकता / सकती हूं? मुझे लगता है कि समस्या यह है  यह  है  विंडो  ऊपर के मामले में  यह  यहां क्या मान लेना चाहिए?  
 
 
 आपको समस्या यह है कि  यह ।  
 क्षेत्र को jQuery ऑब्जेक्ट होना चाहिए  $ ("इनपुट") । इसलिए:  
  var myThis = $ ("इनपुट"); MyThis.val.call (मेरा है, "हाय");   
  अपरिभाषित  समस्या यह है कि jQuery आंतरिक रूप से उस स्कोप ऑब्जेक्ट पर अन्य jQuery फ़ंक्शन को कॉल करने का प्रयास करेगा। और आपका  यह  (जो संभवत:  विंडो  है) के पास नहीं है।

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