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var jQuery = function( selector, context ) {
return new jQuery.fn.init( selector, context, rootjQuery );
}
// 宸ュ叿鍑芥暟 Utilities
// 寮傛闃熷垪 Deferred
// 嫻忚鍣ㄦ祴璇?Support
// 鏁版嵁緙撳瓨 Data
// 闃熷垪 queue
// 灞炴ф搷浣?Attribute
// 浜嬩歡澶勭悊 Event
// 閫夋嫨鍣?Sizzle
// DOM閬嶅巻
// DOM鎿嶄綔
// CSS鎿嶄綔
// 寮傛璇鋒眰 Ajax
// 鍔ㄧ敾 FX
// 鍧愭爣鍜屽ぇ灝?br /> window.jQuery = window.$ = jQuery;
})(window);
浠庝笂杈圭殑娉ㄩ噴鐪嬶紝jQuery鐨勬簮鐮佺粨鏋勭浉褰撴竻鏅般佹潯鐞嗭紝涓嶅儚浠ｇ爜閭ｈ埇鏅︽訂鍜岃浜虹籂緇撱?img src ="http://www.tkk7.com/adamduan/aggbug/370493.html" width = "1" height = "1" />
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(function( window, undefined ) { // jquery code })(window); |
1.榪欐槸涓涓?/span>鑷皟鐢ㄥ尶鍚嶅嚱鏁?/span>銆備粈涔堜笢涓滃憿錛熷湪絎竴涓嫭鍙峰唴錛屽垱寤轟竴涓尶鍚嶅嚱鏁幫紱絎簩涓嫭鍙鳳紝绔嬪嵆鎵ц
2.涓轟粈涔堣鍒涘緩榪欐牱涓涓?#8220;鑷皟鐢ㄥ尶鍚嶅嚱鏁?#8221;鍛紵
閫氳繃瀹氫箟涓涓尶鍚嶅嚱鏁幫紝鍒涘緩浜嗕竴涓?#8220;縐佹湁”鐨勫懡鍚嶇┖闂達紝璇ュ懡鍚嶇┖闂寸殑鍙橀噺鍜屾柟娉曪紝涓嶄細鐮村潖鍏ㄥ眬鐨勫懡鍚嶇┖闂淬傝繖鐐歸潪甯告湁鐢ㄤ篃鏄竴涓狫S妗嗘灦蹇呴』鏀寔鐨勫姛鑳斤紝jQuery琚簲鐢ㄥ湪鎴愬崈涓婁竾鐨凧avaScript紼嬪簭涓紝蹇呴』紜繚jQuery鍒涘緩鐨勫彉閲忎笉鑳藉拰瀵煎叆浠栫殑紼嬪簭鎵浣跨敤鐨勫彉閲忓彂鐢熷啿紿併?/span>
3.鍖垮悕鍑芥暟浠庤娉曚笂鍙嚱鏁扮洿鎺ラ噺錛孞avaScript璇硶闇瑕佸寘鍥村尶鍚嶅嚱鏁扮殑鎷彿錛屼簨瀹炰笂鑷皟鐢ㄥ尶鍚嶅嚱鏁版湁涓ょ鍐欐硶錛堟敞鎰忔爣綰簡鐨勫彸鎷彿錛夛細
(function() {
console.info( this );
console.info( arguments );
}( window )
);
(function() {
console.info( this );
console.info( arguments );
}
)( window );
4.涓轟粈涔堣浼犲叆window鍛紵
閫氳繃浼犲叆window鍙橀噺錛屼嬌寰梬indow鐢卞叏灞鍙橀噺鍙樹負灞閮ㄥ彉閲忥紝褰撳湪jQuery浠ｇ爜鍧椾腑璁塊棶window鏃訛紝涓嶉渶瑕佸皢浣滅敤鍩熼摼鍥為鍒伴《灞備綔鐢ㄥ煙錛岃繖鏍峰彲浠ユ洿蹇殑璁塊棶window錛涜繖榪樹笉鏄叧閿墍鍦紝鏇撮噸瑕佺殑鏄紝灝唚indow浣滀負鍙傛暟浼犲叆錛屽彲浠ュ湪鍘嬬緝浠ｇ爜鏃惰繘琛屼紭鍖栵紝鐪嬬湅jquery-1.6.1.min.js錛?/span>
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(function(a,b){})(window); // window 琚紭鍖栦負 a |
5.涓轟粈涔堣鍦ㄥ湪鍙傛暟鍒楄〃涓鍔爑ndefined鍛紵
鍦?nbsp;鑷皟鐢ㄥ尶鍚嶅嚱鏁?/span> 鐨勪綔鐢ㄥ煙鍐咃紝紜繚undefined鏄湡鐨勬湭瀹氫箟銆傚洜涓簎ndefined鑳藉琚噸鍐欙紝璧嬩簣鏂扮殑鍊箋?br />
undefined = "now it's defined"; alert( undefined ); |
嫻忚鍣?/strong> | 嫻嬭瘯緇撴灉 | 緇撹 |
ie | now it's defined | 鍙互鏀瑰彉 |
firefox | undefined | 涓嶈兘鏀瑰彉 |
chrome | now it's defined | 鍙互鏀瑰彉 |
opera | now it's defined | 鍙互鏀瑰彉 |
6. 娉ㄦ剰鍒版簮鐮佹渶鍚庣殑鍒嗗彿浜嗗悧錛?/span>
鍒嗗彿鏄彲閫夌殑錛屼絾鐪佺暐鍒嗗彿騫朵笉鏄竴涓ソ鐨?/span>緙栫▼涔犳儻錛涗負浜嗘洿濂界殑鍏煎鎬у拰鍋ュ．鎬э紝璇峰湪姣忚浠ｇ爜鍚庡姞涓婂垎鍙峰茍鍏繪垚涔犳儻銆?/span>
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Jquery鐨刟pi涓彁渚涗簡瀵瑰厓绱犲簲鐢╠isabled鍜宺eadonly灞炴х殑鏂規硶錛屽湪榪欓噷璁板綍涓嬨傚涓嬶細
1.readonly
銆銆$('input').attr("readonly","readonly")//灝唅nput鍏冪礌璁劇疆涓簉eadonly
銆銆$('input').removeAttr("readonly");//鍘婚櫎input鍏冪礌鐨剅eadonly灞炴?br />
銆銆 if($('input').attr("readonly")==true)//鍒ゆ柇input鍏冪礌鏄惁宸茬粡璁劇疆浜唕eadonly灞炴?/p>
銆銆 瀵逛簬涓哄厓绱犺緗畆eadonly灞炴у拰鍙栨秷readonly灞炴х殑鏂規硶榪樻湁濡備笅涓ょ錛?br /> 銆銆$('input').attr("readonly",true)//灝唅nput鍏冪礌璁劇疆涓簉eadonly
銆銆$('input').attr("readonly",false)//鍘婚櫎input鍏冪礌鐨剅eadonly灞炴?/p>
銆銆$('input').attr("readonly","readonly")//灝唅nput鍏冪礌璁劇疆涓簉eadonly
銆銆$('input').attr("readonly","")//鍘婚櫎input鍏冪礌鐨剅eadonly灞炴?br /> 2.disabled
銆銆 $('input').attr("disabled","disabled")//灝唅nput鍏冪礌璁劇疆涓篸isabled
銆銆$('input').removeAttr("disabled");//鍘婚櫎input鍏冪礌鐨刣isabled灞炴?br />
銆銆if($('input').attr("disabled")==true)//鍒ゆ柇input鍏冪礌鏄惁宸茬粡璁劇疆浜哾isabled灞炴?/p>
銆銆瀵逛簬涓哄厓绱犺緗甦isabled灞炴у拰鍙栨秷disabled灞炴х殑鏂規硶榪樻湁濡備笅涓ょ錛?br /> 銆銆$('input').attr("disabled",true)//灝唅nput鍏冪礌璁劇疆涓篸isabled
銆銆$('input').attr("disabled",false)//鍘婚櫎input鍏冪礌鐨刣isabled灞炴?/p>
銆銆$('input').attr("disabled","disabled")//灝唅nput鍏冪礌璁劇疆涓篸isabled
銆銆$('input').attr("disabled","")//鍘婚櫎input鍏冪礌鐨刣isabled灞炴?/p>