鍩烘湰绫诲瀷鍜屽紩鐢ㄧ被鍨嬪湪JavaScript涓紝鏁版嵁绫诲瀷鍙互鍒嗕负鍩烘湰绫诲瀷鍜屽紩鐢ㄧ被鍨嬨€傛湁鍏鍩烘湰绫诲瀷锛歂ull銆乁ndefined銆丼tring銆丅oolean銆丯umber銆丼ymbol锛涜€屽紩鐢ㄧ被鍨嬪氨鏄紶璇翠腑鐨凮bject銆傚叾涓紝鍩烘湰绫诲瀷鏄寜鍊间紶閫掞紝鑰屽紩鐢ㄧ被鍨嬫槸鎸夊紩鐢ㄨ闂€硷紝鎵€浠ュ湪鎿嶄綔瀵硅薄鏃讹紝瀹為檯涓婃槸鍦ㄦ搷浣滃璞＄殑寮曠敤锛岃€屼笉鏄疄闄呭璞★紙ps锛氭坊鍔犲睘鎬ф椂瀵硅薄锛屾搷浣滅殑鏄疄闄呭璞★級銆傚叧浜庡熀鏈被鍨嬪拰寮曠敤绫诲瀷鐨勫尯鍒紝澶ц嚧鏈変互涓嬪嚑鐐癸細1銆佸紩鐢ㄧ被鍨嬫槸鍔ㄦ€佸睘鎬э紝鑰屽熀鏈被鍨嬩笉鏄€傚浜庡紩鐢ㄧ被鍨嬶紝鎴戜滑鍙互娣诲姞鍜屽垹闄ゅ睘鎬у拰鏂规硶锛屼絾鏄垜浠笉鑳界粰鍩烘湰绫诲瀷鐨勫€兼坊鍔犲睘鎬э細//basictypevarname='Fly_001';name.age=22;alert(name.age);//涓嶆槑纭殑;//寮曠敤绫诲瀷varperson=newObject();person.name='Fly_001';璀︽姤锛堜汉鍚嶏級锛?/'Fly_001';2.鎶勮鏂瑰紡涓嶅悓銆傚鏋滃皢鍘熷绫诲瀷鐨勫€间粠涓€涓彉閲忓鍒跺埌鍙︿竴涓彉閲忥紝鍒欒鍊煎皢澶嶅埗鍒颁负鏂板彉閲忓垎閰嶇殑浣嶇疆锛歷arnum1=5;varnum2=num1;褰撶敤num1鐨勫€煎垵濮嬪寲num2鏃讹紝num2涔熶繚瀛樹簡鍊?锛屼絾瀹冨彧鏄痭um1涓?鐨勪竴涓嫹璐濓紝涓や釜鍙橀噺浜掍笉褰卞搷銆傚皢寮曠敤绫诲瀷鐨勫€间粠涓€涓彉閲忓鍒跺埌鍙︿竴涓彉閲忔椂锛屼細灏嗘寚閽堜紶閫掔粰瀛樺偍鍦ㄥ爢涓婄殑瀵硅薄銆傚鍒跺畬鎴愬悗锛屼袱涓彉閲忓疄闄呬笂浼氬紩鐢ㄥ悓涓€涓璞★紝鏀瑰彉鍏朵腑涓€涓彉閲忎細褰卞搷鍙︿竴涓彉閲忥細varobj1=newObject();varobj2=obj1;obj1.name='Fly_001';璀︽姤锛坥bj2.name锛夛紱//'Fly_001';3.浼犻€掑弬鏁扮殑鐗圭偣銆傝繖鏄竴涓护浜哄洶鎯戠殑鐐桂煒栥€侲CMAScript涓殑鎵€鏈夊嚱鏁板弬鏁伴兘鏄寜鍊间紶閫掔殑銆備篃灏辨槸璇达紝灏嗗嚱鏁板閮ㄧ殑鍊煎鍒跺埌鍑芥暟鍐呴儴鐨勫弬鏁颁笌灏嗗€间粠涓€涓彉閲忓鍒跺埌鍙︿竴涓彉閲忕浉鍚屻€傚熀鏈被鍨嬪€肩殑浼犻€掍笌鍩烘湰绫诲瀷鍙橀噺鐨勫鍒剁浉鍚岋紝鑰屽紩鐢ㄧ被鍨嬬殑浼犻€掍笌寮曠敤绫诲瀷鍙橀噺鐨勫鍒剁浉鍚屻€傝繖涓€鐐圭‘瀹炰細寮曡捣寰堝灏忎紮浼寸殑浜夎銆傛杩庤璁簙浼犻€掑熀鏈被鍨嬪€肩粰鍙傛暟锛屼紶閫掔殑鍊艰澶嶅埗鍒颁竴涓眬閮ㄥ彉閲忥紙鍗砤rguments瀵硅薄涓殑涓€涓厓绱狅級銆傚綋浼犻€掍竴涓紩鐢ㄧ被鍨嬬殑鍊肩粰鍙傛暟鏃讹紝璇ュ€煎湪鍐呭瓨涓殑鍦板潃浼氳澶嶅埗鍒颁竴涓眬閮ㄥ彉閲忎腑锛屾墍浠ュ眬閮ㄥ彉閲忕殑鍙樺寲浼氬弽鏄犲埌鍑芥暟澶栵細functionaddTen(num){num+=10;杩斿洖num;}varcount=20;varresult=addTen(count);alert(count);//20锛屾病鏈夊彉鍖栵紱璀︽姤锛堢粨鏋滐級锛?/30functionsetNmae(obj){obj.name='Fly_001';}varperson=newObject();setName(person);alert(person.name);//'Fly_001';鍦ㄤ笂闈㈢殑浠ｇ爜涓垜浠垱寤轰簡涓€涓璞″苟灏嗗叾淇濆瓨鍦ㄥ彉閲弍erson涓€傜劧鍚庯紝杩欎釜瀵硅薄鍦ㄤ紶閫掔粰setName()鍑芥暟鏃惰澶嶅埗鍒皁bj锛屽苟涓斿湪杩欎釜鍑芥暟鍐呴儴锛宱bj鍜宲erson寮曠敤鍚屼竴涓璞°€傚緢澶氭湅鍙嬩細璁や负鍙傛暟鏄紩鐢ㄤ紶閫掋€備负浜嗚瘉鏄庡璞℃槸鎸夊€间紶閫掔殑锛岀湅杩欐淇敼鍚庣殑浠ｇ爜锛歠unctionsetName(obj){obj.name='Fly_001';obj=鏂板璞?);obj.name='juejin';}varperson=newObject();setName(person);alert(person.name);//'Fly_001';濡傛灉person鏄€氳繃寮曠敤浼犻€掔殑锛岄偅涔坧erson灏嗚嚜鍔ㄤ慨鏀逛负鎸囧悜涓€涓悕绉板睘鎬т负鈥渏uejin鈥濈殑鏂板璞°€備絾鏄帴涓嬫潵璁块棶person.name鐨勬椂鍊欙紝杩樻槸鏄剧ず'Fly_001'锛屼篃灏辨槸璇村嵆浣垮湪鍑芥暟鍐呴儴淇敼浜嗗弬鏁扮殑鍊硷紝鍘熸潵鐨勫紩鐢ㄨ繕鏄繚鎸佷笉鍙樼殑銆傦紙瀹為檯涓婏紝鍦ㄥ嚱鏁板唴閮ㄩ噸鍐檕bj鏃讹紝杩欎釜鍙橀噺鎸囩殑鏄竴涓眬閮ㄥ璞★紝鍑芥暟鎵ц鍚庝細绔嬪嵆閿€姣併€傦級4.妫€娴嬬被鍨嬬殑杩愮畻绗︿笉鍚屻€傞€傚悎浣跨敤typeofoperatoralert(typeof'Fly_001');//'string';alert(typeof[]);//'鐩殑';鍥犱负typeof杩愮畻绗︾殑杩斿洖鍊兼槸'undefined','string'锛?boolean','number','symbol','object','function'涔嬩竴銆傚彲浠ュ弸濂藉湴鎸囧嚭涓€涓壒瀹氱殑鍩烘湰绫诲瀷锛屽苟涓哄紩鐢ㄧ被鍨嬭繑鍥炰竴鑸殑鈥滃璞♀€濓紙typeof灏嗚繑鍥炴暟缁勩€佹鍒欒〃杈惧紡鍜宯ull鐨勨€滃璞♀€濓級銆俰nstanceof鎿嶄綔绗︽洿閫傚悎妫€娴嬪紩鐢ㄧ被鍨嬶細result=variableinstanceofconstructor;濡傛灉鍙橀噺鏄粰瀹氬紩鐢ㄧ被鍨嬬殑瀹炰緥锛堟牴鎹叾鍘熷瀷閾捐瘑鍒級锛屽垯instanceof杩愮畻绗﹀皢杩斿洖true銆傛墽琛岀幆澧冨拰浣滅敤鍩熶笅闈㈣璇碕avaScript涓竴涓潪甯搁噸瑕佺殑姒傚康鈥斺€旀墽琛岀幆澧冦€侸S涓殑姣忎竴涓墽琛岀幆澧冮兘鏈変竴涓笌涔嬪叧鑱旂殑鍙橀噺瀵硅薄銆傚湪缃戠粶娴忚鍣ㄤ腑锛屽叏灞€鎵ц鐜鏄痺indow瀵硅薄锛屽洜姝ゆ墍鏈夊叏灞€鍙橀噺鍜屽嚱鏁伴兘鏄綔涓簑indow瀵硅薄鐨勫睘鎬у拰鏂规硶鍒涘缓鐨勩€備竴涓墽琛岀幆澧冧腑鐨勬墍鏈変唬鐮佹墽琛屽畬姣曞悗锛岃繖涓幆澧冨氨浼氳閿€姣侊紝鍏朵腑瀛樺偍鐨勬墍鏈夊彉閲忓拰鍑芥暟瀹氫箟涔熶細琚攢姣併€傚叏灞€鎵ц鐜鐩村埌缃戦〉鎴栨祻瑙堝櫒鍏抽棴鍚庢墠浼氳閿€姣侊紙濡傛灉鏈夊叧闂殑鍖咃紝鎯呭喌灏变笉涓€鏍蜂簡锛屽悗闈㈠嚑绡囨枃绔犱細鎻愬埌馃槉锛岃阿璋㈠惔hr鎸囨锛夈€傛瘡涓嚱鏁伴兘鏈夎嚜宸辩殑鎵ц鐜銆傚綋鎵ц娴佽繘鍏ヤ竴涓嚱鏁版椂锛屽嚱鏁扮殑鐜琚帇鍏ョ幆澧冨爢鏍堛€傚嚱鏁版墽琛屽畬鍚庯紝鏍堜細寮瑰嚭瀹冪殑鐜锛屾妸鎺у埗鏉冧氦杩樼粰涔嬪墠鐨勬墽琛岀幆澧冦€倂arcolor='blue';functionchangeColor(){varanotherColor='red';鍑芥暟swapColors(){vartempColor=anotherColor;鍙︿竴绉嶉鑹?棰滆壊锛涢鑹?涓存椂棰滆壊锛?/鍦ㄨ繖閲屼綘鍙互璁块棶color,anotherColor鍜宼empColor;}浜ゆ崲棰滆壊锛堬級锛?/杩欓噷浣犲彲浠ヨ闂甤olor鍜宎notherColor锛屼絾涓嶈兘璁块棶tempColor锛泒changeColor();//杩欓噷鍙兘璁块棶棰滆壊锛涗笂杩颁唬鐮佹秹鍙?涓墽琛岀幆澧冿細鍏ㄥ眬鐜銆乧hangeColor()灞€閮ㄧ幆澧冨拰swapColor()灞€閮ㄧ幆澧冦€傚叾涓紝鍐呴儴鐜鍙互閫氳繃浣滅敤鍩熼摼璁块棶鎵€鏈夊閮ㄧ幆澧冿紝浣嗗閮ㄧ幆澧冧笉鑳借闂唴閮ㄧ幆澧冧腑鐨勪换浣曞彉閲忓拰鍑芥暟銆傝繖浜涚幆澧冧箣闂寸殑鑱旂郴鏄嚎鎬у拰椤哄簭鐨勩€傛瘡涓幆澧冮兘鍙互鍚戜笂鎼滅储浣滅敤鍩熼摼馃攳鏉ユ煡鎵惧彉閲忓拰鍑芥暟鍚嶏紱浣嗘槸娌℃湁鐜鍙互閫氳繃鍚戜笅鎼滅储鑼冨洿閾捐繘鍏ュ彟涓€涓墽琛岀幆澧冦€傛墿灞曚綔鐢ㄥ煙閾俱€傝櫧鐒跺彧鏈変袱绉嶆墽琛岀幆澧冣€斺€斿叏灞€鍜屽眬閮紙鍑芥暟锛夛紝浣嗘墿灞曚綔鐢ㄥ煙閾捐繕鏈変袱绉嶆柟寮忊€斺€攖ry-catch璇彞鐨刢atch鍧楀拰with璇彞銆傝繖涓や釜璇彞閮藉湪浣滅敤鍩熼摼鐨勫墠闈㈡坊鍔犱簡涓€涓彉閲忓璞°€傚浜巜ith璇彞锛屼細灏嗘寚瀹氱殑瀵硅薄娣诲姞鍒颁綔鐢ㄥ煙閾句腑锛涘浜巆atch璇彞锛屽皢鍒涘缓涓€涓柊鐨勫彉閲忓璞★紝鍏朵腑鍖呭惈鎶涘嚭鐨勯敊璇璞＄殑澹版槑銆傛病鏈夊潡浣滅敤鍩熴€侸avaScript缂哄皯鍧椾綔鐢ㄥ煙閫氬父浼氬鑷存贩娣嗮煒层€傚湪鍏朵粬绫籆璇█涓紝鑺辨嫭鍙锋嫭璧锋潵鐨勪唬鐮佸潡鏈夊畠浠嚜宸辩殑浣滅敤鍩燂紝鍗虫墽琛岀幆澧冿紝浣嗗湪JavaScript涓笉鏄繖鏍凤細if(true){varcolor='blue';}alert(color);//'钃濊壊鐨?;for(vari=0;i<10;i++){//dosomething}alert(i);//10;鐢╲ar澹版槑鐨勫彉閲忎細鑷姩闄勫姞鍒版渶杩戠殑鐜涓€傚湪鍑芥暟鍐呴儴锛屾渶杩戠殑鐜鏄嚱鏁扮殑灞€閮ㄧ幆澧冦€傚鏋滀竴涓彉閲忓湪鍒濆鍖栨椂娌℃湁鐢╲ar澹版槑锛岃鍙橀噺灏嗚嚜鍔ㄦ坊鍔犲埌鍏ㄥ眬鐜涓€傦紙浣跨敤let鍏抽敭瀛楀垱寤哄潡浣滅敤鍩熷眬閮ㄥ彉閲忔洿鏂逛究锛夛細鍙傝€冭棰戣瑙ｏ細enterlearningfunctionadd(num1,num2){varsum=num1+num2;杩斿洖鎬诲拰锛泒varresult=add(10,20);//30;alert(sum);//'鎬诲拰鏈畾涔?;鍦ㄤ笂闈㈢殑浠ｇ爜涓紝铏界劧sum鏄粠鍑芥暟杩斿洖鐨勶紝浣嗘槸鍑芥暟澶栨槸鏃犳硶璁块棶鐨勩€傚鏋滅渷鐣ar鍏抽敭瀛楋紝鍒欏彲浠ヨ闂畇um锛堜絾鍦ㄤ弗鏍兼ā寮忎笅锛屽垵濮嬪寲鏈０鏄庣殑鍙橀噺浼氭姤'xxxisnotdefined'閿欒锛夈€傛ā浠垮潡绾ц寖鍥淬€傝櫧鐒秊s娌℃湁鍧楃骇浣滅敤鍩燂紝浣嗘槸鎴戜滑鍙互鐢ㄥ尶鍚嶅嚱鏁版潵妯℃嫙鍧楃骇浣滅敤鍩焴锛岃娉曞涓嬶細(function(){//杩欓噷鏄潡绾т綔鐢ㄥ煙;})();鍑芥暟澹版槑鍖呭惈鍦ㄤ竴瀵规嫭鍙蜂腑琛ㄧず瀹冨疄闄呬笂鏄竴涓嚱鏁拌〃杈惧紡锛屽悗闈㈢殑鎷彿灏嗙珛鍗宠皟鐢ㄨ鍑芥暟銆傚疄闄呬笂锛屽畠绛夊悓浜庯細varsomeFunction(){//杩欓噷鏄潡绾т綔鐢ㄥ煙锛泒;琛ㄨ揪寮忓悗闈㈠彲浠ヨ窡鍦嗘嫭鍙凤紝鎵€浠ュ甫鍦嗘嫭鍙风殑鍑芥暟澹版槑琚浆鎹负鍑芥暟琛ㄨ揪寮忋€傚綋浣犱复鏃堕渶瑕佷竴浜涘彉閲忔椂锛屼娇鐢ㄧ鏈変綔鐢ㄥ煙锛歠unctionoutputNumbers(count){(function(){for(vari=0;i
