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duce()鍙互鐢ㄤ綔鍑芥暟compose鐨勯珮闃跺嚱鏁般€傝娉ㄦ剰锛宺educe()涓嶄細涓虹┖鏁扮粍鎵ц鍥炶皟鍑芥暟銆傝娉昦rray.reduce(function(total,currentValue,currentIndex,arr),initialValue)绀轰緥constarr=[1,2,3,4]arr.reduce((a,b)=>a+b)//10reduceRight()鏂规硶涓巖educe()鍔熻兘鐩稿悓锛屽尯鍒湪浜巖educeRight()鏄粠鏁扮粍鏈熬鍚戝墠绱姞鏁扮粍涓殑鏁扮粍椤广€傝娉ㄦ剰锛宺educe()涓嶄細涓虹┖鏁扮粍鎵ц鍥炶皟鍑芥暟銆傝娉昦rray.reduceRight(function(total,currentValue,currentIndex,arr),initialValue)绀轰緥constarr=[1,2,3,4]arr.reduceRight((a,b)=>a+b)//10杩斿洖鍙凯浠ｅ璞ntries()鏂规硶杩斿洖涓€涓暟缁勫彲杩唬瀵硅薄锛岃瀵硅薄鍖呭惈鏁扮粍鐨勯敭鍊煎锛堥敭/鍊硷級銆傝凯浠ｅ璞′腑鏁扮粍鐨勭储寮曞€间綔涓洪敭锛屾暟缁勫厓绱犱綔涓哄€笺€傝娉昦rray.entries()绀轰緥constarr=[1,2,3,4]arr.entries()//鏁扮粍杩唬鍣▄}//[0,1]//[1,2]//[2,3]//[3,4]keys()鏂规硶鐢ㄤ簬浠庢暟缁勪腑鍒涘缓涓€涓寘鍚暟缁勯敭鐨勫彲杩唬瀵硅薄銆傚鏋滃璞℃槸鏁扮粍锛屽垯杩斿洖true锛屽惁鍒欒繑鍥瀎alse銆傝娉昦rray.keys()绀轰緥constarr=[1,2,3,4]arr.keys()//ArrayIterator{}鍩烘湰鎿嶄綔from()鏂规硶鐢ㄤ簬浼犻€掑叿鏈塴ength灞炴€х殑瀵硅薄鎴栧彲杩唬瀵硅薄杩斿洖涓€涓暟缁?濡傛灉瀵硅薄鏄暟缁勶紝鍒欒繑鍥瀟rue锛屽惁鍒欒繑鍥瀎alse銆傝娉旳rray.from(object,mapFunction,thisValue)绀轰緥constarr=[1,2,3,4]Array.from(arr,item=>item*10);//[10,20,30,40]reverse()鏂规硶鐢ㄤ簬鍙嶈浆鏁扮粍涓厓绱犵殑椤哄簭銆傝娉昦rray.reverse()绀轰緥constarr=[1,2,3,4]arr.reverse()//[4,3,2,1]slice()鏂规硶鍙互杩斿洖浠庣幇鏈夋暟缁勪腑閫夋嫨鐨勫厓绱犮€俿lice()鏂规硶鎻愬彇瀛楃涓茬殑涓€閮ㄥ垎骞跺皢鎻愬彇鐨勯儴鍒嗕綔涓烘柊瀛楃涓茶繑鍥炪€傝娉ㄦ剰锛宻lice()鏂规硶涓嶄細鏀瑰彉鍘熷鏁扮粍銆傝娉昦rray.slice(start,end)渚嬪瓙constarr=[1,2,3,4]arr.slice(0,1)//[1]copyWithin()鏂规硶鐢ㄤ簬浠庢寚瀹氫綅缃鍒跺厓绱犳暟缁勫埌鍙︿竴涓寚瀹氫綅缃殑鏁扮粍銆傝娉昦rray.copyWithin(target,start,end)绀轰緥constarr=[1,2,3,4]arr.copyWithin(2,0,2)//[1,2,1,2]valueOf()鏂规硶杩斿洖Array瀵硅薄鐨勫師濮嬪€笺€傝娉ㄦ剰锛屾鍘熷鍊肩敱浠嶢rray瀵硅薄娲剧敓鐨勬墍鏈夊璞＄户鎵裤€倂alueOf()鏂规硶閫氬父鐢盝avaScript鍦ㄥ箷鍚庤嚜鍔ㄨ皟鐢紝涓嶄細鏄惧紡鍑虹幇鍦ㄤ唬鐮佷腑銆倂alueOf()鏂规硶涓嶄細鏇存敼鍘熷鏁扮粍銆傛暟缁勪腑鐨勫厓绱犱互閫楀彿鍒嗛殧銆傝娉昦rray.valueOf()绀轰緥constarr=[1,2,3,4]arr.valueOf()//[1,2,3,4]splice()鏂规硶鐢ㄤ簬娣诲姞鎴栧垹闄ゆ暟缁勪腑鐨勫厓绱?璇锋敞鎰忥紝姝ゆ柟娉曚細鏀瑰彉鍘熷鏁扮粍銆傝娉昦rray.splice(index,howmany,item1,...,itemX)绀轰緥constarr=[1,2,3,4]arr.splice(2,1)//[3]//arr[1,2,4]constarr=[1,2,3,4]arr.splice(2,1,4)//[3]//arr[1,2,4,4]concat()鏂规硶鐢ㄤ簬杩炴帴涓や釜鎴栨洿澶氭暟缁勩€傛鏂规硶涓嶄細鏇存敼鐜版湁鏁扮粍锛岃€屽彧鏄繑鍥炰覆鑱旀暟缁勭殑鍓湰銆傝娉昦rr.concat(arr1,arr2,...,arrN)caseconstarr=[]constarr1=[1,2]constarr2=[3,4]arr.concat(arr1,arr2)//娉ㄦ剰鏄痳eturn浠峰€硷紒(4)[1,2,3,4]isArray()鏂规硶鐢ㄤ簬鍒ゆ柇涓€涓璞℃槸鍚︿负鏁扮粍銆傝娉旳rray.isArray(obj)娉ㄦ剰涓嶆槸杩欐牱鐢ㄧ殑锛屾槸Array瀵硅薄鎻愪緵鐨勬柟娉曪紝浼犲叆瑕佹娴嬬殑瀵硅薄銆備緥瀛恈onstarr=[]Array.isArray(arr)//truefill()鏂规硶鐢ㄤ簬鐢ㄥ浐瀹氬€兼浛鎹㈡暟缁勭殑鍏冪礌銆傝娉昦rray.fill(value,start,end)绀轰緥vararr=["good","yes","no","hello"];arr.fill("涓€",2,4);//changedOriginalarray(4)['good','yes','one','one']馃ウ鎬荤粨涓€涓嬶紝鎴戣姳浜嗗緢澶氭椂闂达紝涓嶄粎璁╀綘瀛﹀埌浜嗗緢澶氾紝涔熶负浜嗘垜瑕佸姟瀹炲緢澶氬熀纭€鐭ヨ瘑銆備慨淇ˉ琛ワ紝鏌ユ紡琛ョ己锛屾參鎱㈠爢鎴愬牎鍨掞紒浣犳垜閮藉厛杩涗簡锛屽氨绠椾笉鍏堣繘锛屼互鍚庝篃浼氬厛杩涚殑锛侌煫戣阿璋⑩潳锔忊€嶐煍モ潳锔忊€嶐煍モ潳锔忊€嶐煍ュ叏鑳界綉缁滐紒馃オ馃オ馃オ鍜屾垜鍔姏鐨勮嚜宸憋紝涓汉鍗氬锛孏itHub娴嬭瘯锛孏itHub馃嵖馃嵖馃嵖鍏紬鍙枫€愰瀛愬ⅷ銆戯紝灏忕▼搴忋€愬皬楝煎崥瀹€戰煈嶐煈嶐煈嶅鏋滆寰楀浣犳湁甯姪锛岃缁欐垜鐐逛釜璧烇紝骞舵寔缁叧娉紒
