Javascript - array connect to another -


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

  • 1 9 उत्तर
  • 1 उत्तर

    मेरे पास वास्तव में अजीब स्थिति है:

    जब मैं यह कोड करता हूँ: 

      Var मूल_अरे = [1,2,3]; Var एम = मूल_अरे; m.pop (); चेतावनी (origin_array);   
     मूल_अरे का मान 1,2 हो जाएगा, लेकिन मैंने इसे बदल नहीं किया  
     लेकिन अगर मैं उस कोड को बनाऊँगा:  
      var X = 5; Var y = x; y--; चेतावनी (x);   
     x अभी भी 5 हो, यह "एक्स" से नहीं जोड़ा जाएगा जैसा कि आप 1 उदाहरण से देख सकते हैं।  
     तो मेरा सवाल है कि मैं कैसे कर सकता हूं "एम" सरणी अद्वितीय है, जो मूल सरणी को बदल नहीं सकता?   
     
     
     आपको स्पष्ट रूप से एक ( उथले) प्रतिलिपि या  मूल_अरे  का क्लोन:  
      var m = origin_array.slice (0);   
     आदिम मानों के लिए आवश्यक नहीं है, जैसे स्ट्रिंग्स और नंबर।  
     यह समझना जरूरी है कि उपरोक्त समस्या जो आप अनुभव कर रहे थे, उसे रोकने होंगे फिर से गहरा हो सकता है अगर आप अधिक जटिल संरचनाओं से निपटते हैं, और कुछ मामलों में "गहरा क्लोन" आवश्यक है।

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