Javascript 的 Replace 只能取代第一個值?

這樣只能取代第一個符合的值 <script> str = str1.replace("value", "，"); </script> 這樣可以取代所有符合的值 <script> str = str1.replace(new RegExp("value", 'g'), "，"); </script>

如何用 Javascript 清除下拉選單

<select id="lstCity"> <option value="台北市">台北市</option> <option value="基隆市">基隆市</option> <option value="新北市">新北市</option> <option value="宜蘭縣">宜蘭縣</option> <option value="新竹市">新竹市</option> <option value="新竹縣">新竹縣</option> <option value="桃園縣">桃園縣</option> </select> <script> document.getElementById("lstCity").length = 0; </script>

簡單 ajax

var xmlDoc; var xmlHttp; function $(a) { return document.getElementById(a); }; function createXMLHttpRequest() { if (window.ActiveXObject) { xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); } else if (window.XMLHttpRequest) { xmlHttp = new XMLHttpRequest(); } }; function setData(a, b) { $(a).innerHTML = b; }; function ajaxGetData(id) { createXMLHttpRequest(); xmlHttp.open("GET", "apiGetData.aspx?id=" + id, false); xmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); xmlHttp.send(); xmlDoc = xmlHttp.responseXML; xmlDoc.async = false; }; function getNode(a, b, c) { if (c) { if (a.getElementsByTagName(b)[0].hasChildNodes()) return a.getElementsByTagName(b)[0].attributes.getNamedItem(c).value; else return ""; } else { if (a.getElementsByTagName(b)[0].hasChildNodes()) return a.getElementsByTagName(b)[0].firstChild.nodeValue; else return ""; } }; /*-------------------*/ function ajaxSetMemberNew() { ajaxGetData($("txtMemberAccountNew").value); var data = xmlDoc.getElementsByTagName("data")[0]; getNode(data, "status"); getNode(data, "region", "type"); }

利用 Javascript 來做網頁快捷鍵

function hotkey() { var a = window.event.keyCode; if ((a == 65) && (event.ctrlKey)) { alert("你按了ctrl+a键吧"); } } document.onkeydown = hotkey; 1 keycode 8 = BackSpace BackSpace 2 keycode 9 = Tab Tab 3 keycode 12 = Clear 4 keycode 13 = Enter 5 keycode 16 = Shift_L 6 keycode 17 = Control_L 7 keycode 18 = Alt_L 8 keycode 19 = Pause 9 keycode 20 = Caps_Lock 10 keycode 27 = Escape Escape 11 keycode 32 = space space 12 keycode 33 = Prior 13 keycode 34 = Next 14 keycode 35 = End 15 keycode 36 = Home 16 keycode 37 = Left 17 keycode 38 = Up 18 keycode 39 = Right 19 keycode 40 = Down 20 keycode 41 = Select 21 keycode 42 = Print 22 keycode 43 = Execute 23 keycode 45 = Insert 24 keycode 46 = Delete 25 keycode 47 = Help 26 keycode 48 = 0 equal braceright 27 keycode 49 = 1 exclam onesuperior 28 keycode 50 = 2 quotedbl twosuperior 29 keycode 51 = 3 section threesuperior 30 keycode 52 = 4 dollar 31 keycode 53 = 5 percent 32 keycode 54 = 6 ampersand 33 keycode 55 = 7 slash braceleft 34 keycode 56 = 8 parenleft bracketleft 35 keycode 57 = 9 parenright bracketright 36 keycode 65 = a A 37 keycode 66 = b B 38 keycode 67 = c C 39 keycode 68 = d D 40 keycode 69 = e E EuroSign 41 keycode 70 = f F 42 43 keycode 71 = g G 44 keycode 72 = h H 45 keycode 73 = i I 46 keycode 74 = j J 47 keycode 75 = k K 48 keycode 76 = l L 49 keycode 77 = m M mu 50 keycode 78 = n N 51 keycode 79 = o O 52 keycode 80 = p P 53 keycode 81 = q Q at 54 keycode 82 = r R 55 keycode 83 = s S 56 keycode 84 = t T 57 keycode 85 = u U 58 keycode 86 = v V 59 keycode 87 = w W 60 keycode 88 = x X 61 keycode 89 = y Y 62 keycode 90 = z Z 63 keycode 96 = KP_0 KP_0 64 keycode 97 = KP_1 KP_1 65 keycode 98 = KP_2 KP_2 66 keycode 99 = KP_3 KP_3 67 keycode 100 = KP_4 KP_4 68 keycode 101 = KP_5 KP_5 69 keycode 102 = KP_6 KP_6 70 keycode 103 = KP_7 KP_7 71 keycode 104 = KP_8 KP_8 72 keycode 105 = KP_9 KP_9 73 keycode 106 = KP_Multiply KP_Multiply 74 keycode 107 = KP_Add KP_Add 75 76 keycode 108 = KP_Separator KP_Separator 77 keycode 109 = KP_Subtract KP_Subtract 78 keycode 110 = KP_Decimal KP_Decimal 79 keycode 111 = KP_Divide KP_Divide 80 keycode 112 = F1 81 keycode 113 = F2 82 keycode 114 = F3 83 keycode 115 = F4 84 85 86 keycode 116 = F5 87 keycode 117 = F6 88 keycode 118 = F7 89 keycode 119 = F8 90 keycode 120 = F9 91 keycode 121 = F10 92 keycode 122 = F11 93 keycode 123 = F12 94 keycode 124 = F13 95 keycode 125 = F14 96 keycode 126 = F15 97 keycode 127 = F16 98 keycode 128 = F17 99 keycode 129 = F18 100 keycode 130 = F19 101 keycode 131 = F20 102 keycode 132 = F21 103 keycode 133 = F22 104 keycode 134 = F23 105 keycode 135 = F24 106 keycode 136 = Num_Lock 107 keycode 137 = Scroll_Lock

http://blog.csdn.net/qshpeng/archive/2007/06/29/1671594.aspx
http://www.51testing.com/?uid-116976-action-viewspace-itemid-212870

如何下載拓網或地圖擋你右鍵網站的圖片

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