Difference between _.forEach and _.forOwn in lodash -


एक ऑब्जेक्ट पर फिर से दो तरीकों के बीच अंतर क्या है?

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अंतर इस बात में निहित है कि अगर जिस संग्रह पर आप फिर से चल रहे हैं वह एक वस्तु है जिसमें एक लंबाई संपत्ति है, फिर _। के लिए () इस पर पुनरावृत्त होगा जैसे कि यह एक सरणी है, जबकि _। ForOwn () एक ऑब्जेक्ट की तरह इसे पुनरावृत्त करेगा।

मान लें कि आपके पास वस्तु है: 

  a = {x: 100, y: 200, लंबाई: 2}   < P> यदि आप इसे फिर से दोहराते हैं:  
  _। प्रत्येक (ए, फ़ंक्शन (val, key) {console.log ('a [ + कुंजी + '] =' + वैल);});   
 आपको आउटपुट मिलेगा:  
  एक [0] = अपरिभाषित एक [1] = अपरिभाषित < / Code>  
 जबकि इसके साथ इसे  _ के लिए परोसा जा रहा है ()  आपको अधिक उचित मिलेगा:  
  a [x] = 100 एक [y] = 200 एक [लंबाई] = 2

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