jquery - JavaScript, Whats the difference between defining variables with $ and without? -


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

  • 15 उत्तर

क्या परिभाषित करने में कोई अंतर है चर: 

  var p_tr1 = $ ('& lt; tr & gt; & lt; / tr & gt;') $ p_tr = $ ('& lt; tr & gt; & lt; / tr & gt;')

मैं नेटबीन्स का उपयोग कर रहा हूं, और वेरिएबल्स में अलग-अलग हाइलाइटिंग है। मैंने एफएफ डीबगर के माध्यम से देखा और पाया कि वेरिएबल बराबर है

$ चिन्ह केवल एक प्रतीक है जिसे चर नामों में इस्तेमाल किया जा सकता है एक वैरिएबल a = 1 बनाना एक वैरिएबल $ a = 1 बनाने या एक अन्य चर a $ ap = 1 के रूप में सटीक एक वस्तु है। केवल एक चीज जो परिवर्तन करती है वह चर का नाम है आप a == a $ ap टाइप कर सकते हैं और यह आउटपुट true होगा।


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