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 88    参数说明：
 89    prefix：前缀；chkAll：全选框；chkSingle：单选框ID
 90    type：1【全选】，2【反选】，3【取消】
 91   
 92    使用方法：
 93    this.btnSelectAll.Attributes.Add("onClick","CheckType('" + this.dg.ClientID.ToString() + "','chkAll','chkSingle',1);");
 94    this.btnUnSelectAll.Attributes.Add("onClick","CheckType('" + this.dg.ClientID.ToString() + "','chkAll','chkSingle',2);");
 95    this.btnCancelSelect.Attributes.Add("onClick","CheckType('" + this.dg.ClientID.ToString() + "','chkAll','chkSingle',3);");
 96*/
 97function CheckType(prefix,chkAll,chkSingle,type)
 98{
 99    var indexChkAll;
100    if(prefix.length != 0)
101    {
102        indexChkAll        = prefix + "__ctl2_" + chkAll;
103    }
104    else
105    {
106        indexChkAll        = chkAll;
107    }
108    var objChkAll = document.getElementById(indexChkAll);
109    var tempObj;
110    var allCount    = 0;
111    var checkCount    = 0;
112    for(var i=0;i<document.forms[0].elements.length;i++)
113    {   
114        tempObj = document.forms[0].elements[i];
115        if(tempObj.type == "checkbox" && tempObj.id != indexChkAll && tempObj.id.indexOf(chkSingle) != -1)
116        {
117            switch(type)
118            {
119                case 1:
120                    tempObj.checked = true;
121                    break;
122                case 2:
123                    tempObj.checked = !tempObj.checked;
124                    break;
125                case 3:
126                    tempObj.checked = false;
127                    break;
128            }
129            if(tempObj.checked)
130            {
131                checkCount++;
132            }
133            allCount++;
134        }
135    }
136    if(checkCount != allCount)
137    {
138        objChkAll.checked = false;
139    }
140    else
141    {
142        if(allCount != 0)
143        {
144            objChkAll.checked = true;
145        }
146    }
147    window.event.returnValue = false;
148    return false;
149}
150
151/**//*
152    参数说明：
153    prefix：前缀；chkAll：全选框；chkSingle：单选框ID
154
155    使用方法：
156    this.btnDelete.Attributes.Add("onClick","SubmitCheckBox('" + this.dg.ClientID.ToString() + "','chkAll','chkSingle');");
157*/
158function SubmitCheckBox(prefix,chkAll,chkSingle,msg)
159{
160    var indexChkAll;
161    if(prefix.length != 0)
162    {
163        indexChkAll        = prefix + "__ctl2_" + chkAll;
164    }
165    else
166    {
167        indexChkAll        = chkAll;
168    }
169    var objChkAll = document.getElementById(indexChkAll);
170   
171    var tempObj;
172    var allCount    = 0;
173    var checkCount    = 0;
174    for(var i=0;i<document.forms[0].elements.length;i++)
175    {   
176        tempObj = document.forms[0].elements[i];
177        if(tempObj.type == "checkbox" && tempObj.id != indexChkAll && tempObj.id.indexOf(chkSingle) != -1)
178        {
179            if(tempObj.checked)
180            {
181                checkCount++;
182            }
183            allCount++;
184        }
185    }
186    if(allCount == 0) //没有数据
187    {
188        window.alert("当前没有" + msg + "可供删除");
189        window.event.returnValue = false;
190        return false;
191    }
192    else
193    {
194        if(checkCount == 0)
195        {
196            window.alert("没有选中要删除的" + msg + "");
197            window.event.returnValue = false;
198            return false;
199        }
200        else
201        {
202            //if(window.confirm("确定要删除当前选中的【" + checkCount.toString() + "】项吗？") == false)
203            if(window.confirm("确定要删除当前选中的" + msg + "吗？") == false)
204            {
205                window.event.returnValue = false;
206                return false;
207            }
208        }
209    }
210}

http://www.cnblogs.com/skylaugh/archive/2006/12/18/596098.html

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