javascript - Empty object returns false on checking -

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इस सवाल का पहले से ही एक उत्तर है: < / P>

  • 3 जवाब

    मैं जांचने की कोशिश कर रहा हूँ एक div मौजूद है या नहीं DOM में: 

      $ ("# mydiv") // रिटर्न [] $ .isEmptyObject ($ ("# mydiv")) // लौटा झूठी $ .isEmptyObject ([]) // क्या सही हो   
     कोई भी विचार मैं गलत क्यों कर सकता हूं? 
     इसके अलावा, DOM में एक तत्व की अस्तित्व की जाँच करने का सबसे अच्छा तरीका क्या है?   
     
     
      isEmptyObject  ऑब्जेक्ट में अन्य ऑब्जेक्ट्स शामिल हैं या नहीं यह जांचने के लिए उपयोग नहीं किया गया है यह जांचने के लिए प्रयोग किया जाता है कि ऑब्जेक्ट के गुण हैं या नहीं।  
      $। IsEmptyObject ($ ("# mydiv"))  झूठी झूठी देता है क्योंकि बहुत सारे गुण हैं जो आप कॉल कर सकते हैं इस वस्तु  
      $ ("# mydiv")। Html () $ ("# mydiv")। पाठ () // आदि   
     दूसरों के रूप में ने कहा है, अगर आप यह देखने की कोशिश कर रहे हैं कि वस्तु डोम में मौजूद है, तो  लंबाई  संपत्ति का उपयोग करें

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