下面这个表示页面中只有一个回车键按钮的时候：
1 function document.onkeydown(){
2 if(event.keyCode==13){
3 document.getElementById("search_b").click();
4 return false;
5 }
6 }
下面这样就表示取消回车键
1 if (window.event.keyCode==13){
2 window.event.keyCode=0;
3 }
下面这个表示页面中有两个回车键按钮的时候：
1 function document.onkeydown(){
2 var activeObj = document.activeElement;
3 if(event.keyCode==13){
4 if (activeObj.name=="USER_PASS" || activeObj.name=="USER_ID") {
5 document.getElementById("loginln").click();
6 return false;
7 } else {
8 document.getElementById("search_b").click();
9 return false;
10 }
11 }
12 }
下面是html代码：
1 <input type="image" name="search_b" id="search_b" src="search.gif" border="0" onclick="javascript:document.submit();" >
1 <?php
2 /**
3 *=================================================
4 *
5 * @author hahawen(大龄青年)
6 * @since 2004-12-04
7 * @copyright Copyright (c) 2004, NxCoder Group
8 *
9 *=================================================
10 */
11 /**
12 * abstract class SimpleDocumentBase
13 * base class for xml file parse
14 * all this pachage's is work for xml file, and method is action as DOM.
15 *
16 * 1 add/update/remove data of xml file.
17 * 2 explode data to array.
18 * 3 rebuild xml file
19 *
20 * @package SmartWeb.common.xml
21 * @abstract
22 * @version 1.0
23 */
24 abstract class SimpleDocumentBase
25 {
26 private $nodeTag = null;
27 private $attributes = array ();
28 private $values = array ();
29 private $nodes = array ();
30 function __construct($nodeTag)
31 {
32 $this->nodeTag = $nodeTag;
33 }
34 public function getNodeTag()
35 {
36 return $this->nodeTag;
37 }
38 public function setValues($values)
39 {
40 $this->values = $values;
41 }
42 public function setValue($name, $value)
43 {
44 $this->values[$name] = $value;
45 }
46 public function getValue($name = null)
47 {
48 return $name == null ? $this->values : $this->values[$name];
49 }
50 public function removeValue($name)
51 {
52 unset ($this->values["$name"]);
53 }
54 public function setAttributes($attributes)
55 {
56 $this->attributes = $attributes;
57 }
58 public function setAttribute($name, $value)
59 {
60 $this->attributes[$name] = $value;
61 }
62 public function getAttribute($name = null)
63 {
64 return $name == null ? $this->attributes : $this->attributes[$name];
65 }
66 public function removeAttribute($name)
67 {
68 unset ($this->attributes["$name"]);
69 }
70 public function getNodesSize()
71 {
72 return sizeof($this->nodes);
73 }
74 protected function setNode($name, $nodeId)
75 {
76 $this->nodes[$name] = $nodeId;
77 }
78 public abstract function createNode($name, $attributes);
79 public abstract function removeNode($name);
80 public abstract function getNode($name = null);
81 protected function getNodeId($name = null)
82 {
83 return $name == null ? $this->nodes : $this->nodes[$name];
84 }
85 protected function createNodeByName($rootNodeObj, $name, $attributes, $pId)
86 {
87 $tmpObject = $rootNodeObj->createNodeObject($pId, $name, $attributes);
88 $key = isset ($attributes[id]) ? $name .
89 '_' . $attributes[id] : $name . '_' . $this->getNodesSize();
90 $this->setNode($key, $tmpObject->getSeq());
91 return $tmpObject;
92 }
93 protected function removeNodeByName($rootNodeObj, $name)
94 {
95 $rootNodeObj->removeNodeById($this->getNodeId($name));
96 if (sizeof($this->nodes) == 1)
97 $this->nodes = array ();
98 else
99 unset ($this->nodes[$name]);
100 }
101 protected function getNodeByName($rootNodeObj, $name = null)
102 {
103 if ($name == null)
104 {
105 $tmpList = array ();
106 $tmpIds = $this->getNodeId();
107 foreach ($tmpIds as $key => $id)
108 $tmpList[$key] = $rootNodeObj->getNodeById($id);
109 return $tmpList;
110 } else
111 {
112 $id = $this->getNodeId($name);
113 if ($id === null)
114 {
115 $tmpIds = $this->getNodeId();
116 foreach ($tmpIds as $tkey => $tid)
117 {
118 if (strpos($key, $name) == 0)
119 {
120 $id = $tid;
121 break;
122 }
123 }
124 }
125 return $rootNodeObj->getNodeById($id);
126 }
127 }
128 public function findNodeByPath($path)
129 {
130 $pos = strpos($path, '|');
131 if ($pos <= 0)
132 {
133 return $this->getNode($path);
134 } else
135 {
136 $tmpObj = $this->getNode(substr($path, 0, $pos));
137 return is_object($tmpObj) ? $tmpObj->findNodeByPath(substr($path, $pos +1)) : null;
138 }
139 }
140 // 写入发送结果函数
141 public function info_write($filename, $info_log)
142 {
143 $fp = fopen($filename, a);
144 ////出错，退出
145 if (!$fp)
146 {
147 exit;
148 }
149 $info .= $info_log;
150 $info .= "\r\n";
151 fwrite($fp, $info);
152 fclose($fp);
153 }
154 public function getSaveData()
155 {
156 $data = $this->values;
157 if (sizeof($this->attributes) > 0)
158 {
159 //$data[attrs] = $this->attributes;
160 }
161 $nodeList = $this->getNode();
162 if ($nodeList == null)
163 {
164 //unset ($data);
165 //return $data;
166 return true;
167 }
168 foreach ($nodeList as $key => $node)
169 {
170 $data[$key] = $node->getSaveData();
171 if($data[id][value] != "")
172 {
173
174 //$this->info_write("user/logic/sax_xml/modules/ok.txt",$data[id][value]);
175 }
176 //unset ($data);
177 }
178
179 echo "<pre>";
180 print_r($data);
181 return true;
182 //return $data;
183 }
184
185 public function getSaveXml($level = 0)
186 {
187 $prefixSpace = str_pad("", $level, " ");
188 $str = "$prefixSpace<$this->nodeTag";
189 foreach ($this->attributes as $key => $value)
190 $str .= " $key=" . $value . "";
191 $str .= ">
192 ";
193 foreach ($this->values as $key => $value)
194 {
195 if (is_array($value))
196 {
197 $str .= "$prefixSpace <$key";
198 foreach ($value[attrs] as $attkey => $attvalue)
199 $str .= " $attkey=" . $attvalue . "";
200 $tmpStr = $value[value];
201 } else
202 {
203 $str .= "$prefixSpace <$key";
204 $tmpStr = $value;
205 }
206 $tmpStr = trim(trim($tmpStr, "
207 "));
208 $str .= ($tmpStr === null || $tmpStr === "") ? " />
209 " : ">$tmpStr</$key>
210 ";
211 }
212 foreach ($this->getNode() as $node)
213 $str .= $node->getSaveXml($level +1) . "
214 ";
215 $str .= "$prefixSpace</$this->nodeTag>";
216 return $str;
217 }
218 function __destruct()
219 {
220 unset ($this->nodes, $this->attributes, $this->values);
221 }
222 }
223 ?>
