发表于 2009-1-5 19:48
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绗簩璁 JavaScript鍩烘湰鏁版嵁缁撴瀯
鍙戝竷: 2008-6-27 09:59 | 浣滆: admin | 鏌ョ湅: 4娆
绗簩璁 JavaScript鍩烘湰鏁版嵁缁撴瀯
鎻愪緵鑴氭湰璇█鐨勭紪绋嬩笌C++闈炲父鐩镐技锛屽畠鍙槸鍘绘帀浜嗭迹璇█涓湁鍏虫寚閽堢瓑瀹规槗浜х敓鐨勯敊璇紝骞舵彁渚涗簡鍔熻兘寮哄ぇ鐨勭被搴撱傚浜庡凡缁忓叿澶囷迹++鎴栵迹璇█鐨勪汉鏉ヨ锛屽涔燡avaScript鑴氭湰璇█鏄竴浠堕潪甯歌交鏉炬剦蹇殑浜嬨
涓銆丣avaScript浠ｇ爜鐨勫姞鍏
JavaScript鐨勮剼鏈寘鎷湪HTML涓紝瀹冩垚涓篐TML鏂囨。鐨勪竴閮ㄥ垎銆備笌HTML鏍囪瘑鐩哥粨鍚堬紝鏋勬垚浜嗕竴涓姛鑳藉己澶х殑Internet缃戜笂缂栫▼璇█銆傚彲浠ョ洿鎺ュ皢JavaScript鑴氭湰鍔犲叆鏂囨。锛
璇存槑锛
锛1锛夐氳繃鏍囪瘑鎸囨槑JavaScript鑴氭湰婧愪唬鐮佸皢鏀惧叆鍏堕棿銆
锛2锛夐氳繃灞炴anguage ="JavaScript"璇存槑鏍囪瘑涓槸浣跨敤鐨勪綍绉嶈瑷锛岃繖閲屾槸JavaScript璇█, 琛ㄧず鍦↗avaScript涓娇鐢ㄧ殑璇█銆
浜屻佸熀鏈暟鎹被鍨
JavaScript鑴氭湰璇█鍚屽叾瀹冭瑷涓鏍凤紝鏈夊畠鑷韩鐨勫熀鏈暟鎹被鍨嬨佽〃杈惧紡鍜岀畻鏈繍绠楃浠ュ強绋嬪簭鐨勫熀鏈鏋剁粨鏋勩侸avaScript鎻愪緵浜嗗洓绉嶅熀鏈殑鏁版嵁绫诲瀷鐢ㄦ潵澶勭悊鏁板瓧鍜屾枃瀛, 鑰屽彉閲忔彁渚涘瓨鏀句俊鎭殑鍦版柟, 琛ㄨ揪寮忓垯鍙互瀹屾垚杈冨鏉傜殑淇℃伅澶勭悊銆
1.鍩烘湰鏁版嵁绫诲瀷
鍦↗avaScript涓洓绉嶅熀鏈殑鏁版嵁绫诲瀷锛氭暟鍊硷紙鏁存暟鍜屽疄鏁帮級銆佸瓧绗︿覆鍨嬶紙鐢ㄢ溾濆彿鎴栤樷欐嫭璧锋潵鐨勫瓧绗︽垨鏁板硷級銆佸竷灏斿瀷锛堜娇True鎴朏alse琛ㄧず锛夊拰绌哄笺傚湪JavaScript鐨勫熀鏈被鍨嬩腑鐨勬暟鎹彲浠ユ槸甯搁噺锛屼篃鍙互鍙橀噺銆傜敱浜嶫avaScript閲囩敤寮辩被鍨嬬殑褰㈠紡锛屽洜鑰屼竴涓暟鎹殑鍙橀噺鎴栧父閲忎笉蹇呴鍏堜綔澹版槑锛岃屾槸鍦ㄤ娇鐢ㄦ垨璧嬪兼椂纭畾鍏舵暟鎹殑绫诲瀷鐨勩傚綋鐒朵篃鍙互鍏堝０鏄庤鏁版嵁鐨勭被鍨嬶紝瀹冩槸閫氳繃鍦ㄨ祴鍊兼椂鑷姩璇存槑鍏舵暟鎹被鍨嬬殑銆
2.甯搁噺
锛1锛夋暣鍨嬪父閲
JavaScript鐨勫父閲忛氬父鍙堢О瀛楅潰甯搁噺锛屽畠鏄笉鑳芥敼鍙樼殑鏁版嵁銆傚叾鏁村瀷甯搁噺鍙互浣跨敤鍗佸叚杩涘埗銆佸叓杩涘埗鍜屽崄杩涘埗琛ㄧず鍏跺笺
锛2锛夊疄鍨嬪父閲
瀹炲瀷甯搁噺鏄敱鏁存暟閮ㄥ垎鍔犲皬鏁伴儴鍒嗚〃绀猴紝濡12.32銆193.98 銆傚彲浠ヤ娇鐢ㄧ瀛︽垨鏍囧噯鏂规硶琛ㄧず锛5E7銆4e5绛夈
锛3锛夊竷灏斿
甯冨皵甯搁噺鍙湁涓ょ鐘舵侊細True鎴朏alse銆 瀹冧富瑕佺敤鏉ヨ鏄庢垨浠ｈ〃涓绉嶇姸鎬佹垨鏍囧織锛屼互璇存槑鎿嶄綔娴佺▼銆傚畠涓庯迹锛嬶紜鏄笉涓鏍风殑,锛ｏ紜锛嬪彲浠ョ敤锛戞垨锛愯〃绀哄叾鐘舵,鑰孞avaScript鍙兘鐢═rue鎴朏alse琛ㄧず鍏剁姸鎬併
锛4锛夊瓧绗﹀瀷甯搁噺
浣跨敤鍗曞紩鍙凤紙鈥橈級鎴栧弻寮曞彿锛堚滐級鎷捣鏉ョ殑涓涓垨鍑犱釜瀛楃銆傚 "This is a book of JavaScript "銆"3245"銆"ewrt234234" 绛夈
锛5锛夌┖鍊
JavaScript涓湁涓涓┖鍊糿ull,琛ㄧず浠涔堜篃娌℃湁銆傚璇曞浘寮曠敤娌℃湁瀹氫箟鐨勫彉閲,鍒欒繑鍥炰竴涓狽ull鍊笺
锛6锛夌壒娈婂瓧绗
鍚岋迹璇█涓鏍凤紝JavaScript涓悓鏍蜂互鏈変簺浠ュ弽鏂滄潬锛堬紡锛夊紑澶寸殑涓嶅彲鏄剧ず鐨勭壒娈婂瓧绗︺傞氬父绉颁负鎺у埗瀛楃銆
3.鍙橀噺
鍙橀噺鐨勪富瑕佷綔鐢ㄦ槸瀛樺彇鏁版嵁銆佹彁渚涘瓨鏀句俊鎭殑瀹瑰櫒銆傚浜庡彉閲忓繀椤绘槑纭彉閲忕殑鍛藉悕銆佸彉閲忕殑绫诲瀷銆佸彉閲忕殑澹版槑鍙婂叾鍙橀噺鐨勪綔鐢ㄥ煙銆
锛1锛夊彉閲忕殑鍛藉悕
JavaScript涓殑鍙橀噺鍛藉悕鍚屽叾璁＄畻鏈鸿瑷闈炲父鐩镐技锛岃繖閲岃娉ㄦ剰浠ヤ笅涓ょ偣锛
A.蹇呴』鏄竴涓湁鏁堢殑鍙橀噺锛屽嵆鍙橀噺浠ュ瓧姣嶅紑澶达紝涓棿鍙互鍑虹幇鏁板瓧濡倀est1銆乼ext2绛夈傞櫎涓嬪垝绾匡紙锛嶏級浣滀负杩炲瓧绗﹀锛屽彉閲忓悕绉颁笉鑳芥湁绌烘牸銆侊紙锛嬶級銆侊紙锛嶏級銆侊紙锛岋級鎴栧叾瀹冪鍙枫
B.涓嶈兘浣跨敤JavaScript涓殑鍏抽敭瀛椾綔涓哄彉閲忋
鍦↗avaScript涓畾涔変簡40澶氫釜绫婚敭瀛楋紝杩欎簺鍏抽敭鏄疛avaScript鍐呴儴浣跨敤鐨勶紝涓嶈兘浣滀负鍙橀噺鐨勫悕绉般傚Var銆乮nt銆乨ouble銆乼rue涓嶈兘浣滀负鍙橀噺鐨勫悕绉般
鍦ㄥ鍙橀噺鍛藉悕鏃讹紝鏈濂芥妸鍙橀噺鐨勬剰涔変笌鍏朵唬琛ㄧ殑鎰忔濆搴旇捣鏉ワ紝浠ュ厤鍑虹幇閿欒銆
锛2锛夊彉閲忕殑绫诲瀷
鍦↗avaScript涓紝鍙橀噺鍙互鐢ㄥ懡浠ar浣滃０鏄:
var mytest;
璇ヤ緥瀛愬畾涔変簡涓涓猰ytest鍙橀噺銆備絾娌℃湁璧嬩簣瀹冪殑鍊笺
Var mytest=鈥漈his is a book鈥
璇ヤ緥瀛愬畾涔変簡涓涓猰ytest鍙橀噺, 鍚屾椂璧嬩簣浜嗗畠鐨勫笺
鍦↗avaScript涓紝鍙橀噺浠ュ彲浠ヤ笉浣滃０鏄庯紝鑰屽湪浣跨敤鏃跺啀鏍规嵁鏁版嵁鐨勭被鍨嬫潵纭叾鍙橀噺鐨勭被鍨嬨傚锛
x=100
y="125"
xy= True
cost=19.5绛夈
鍏朵腑x鏁存暟锛寉涓哄瓧绗︿覆锛寈y涓哄竷灏斿瀷锛宑ost涓哄疄鍨嬨
