实现无刷新联动例子汇总_javascript技巧
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2022-04-26 11:50:25
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Iframe实现无刷新联动
iframe的无刷新其实是局部刷新,状态栏的滚动条还是会滚动,只是页面不会闪烁,这是一种比较老的技术了,在处理的数据两大的时候会比较慢,在本例中需要两个页面:index.aspx和frame.asapx,index.aspx用来显示界面,其中有一个iframe标记,指向frame.aspx页用来显示结果
index.aspx前台代码
无标题页
frame.aspx的前台代码:
无标题页
frame.aspx后台代码:
using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; public partial class myframe : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { string pro = Request.QueryString["pro"]; switch (pro) { case "湖北": this.ddlCity.Items.Clear(); this.ddlCity.Items.Add("武汉"); this.ddlCity.Items.Add("黄冈"); this.ddlCity.Items.Add("黄石"); this.ddlCity.Items.Add("襄樊"); break; case "河北": this.ddlCity.Items.Clear(); this.ddlCity.Items.Add("石家庄"); this.ddlCity.Items.Add("唐山"); this.ddlCity.Items.Add("承德"); this.ddlCity.Items.Add("邯郸"); break; case "广东": this.ddlCity.Items.Clear(); this.ddlCity.Items.Add("广州"); this.ddlCity.Items.Add("佛山"); this.ddlCity.Items.Add("深圳"); this.ddlCity.Items.Add("珠海"); break; case "河南": this.ddlCity.Items.Clear(); this.ddlCity.Items.Add("郑州"); this.ddlCity.Items.Add("新乡"); this.ddlCity.Items.Add("安阳"); this.ddlCity.Items.Add("信阳"); break; } } }
JavaScript无刷新联动
前台页面代码:
无标题页
后台代码:
using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Text; public partial class jacascript_Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { StringBuilder myscript = new StringBuilder(); myscript.Append("function City() {\n"); myscript.Append("var ddlpro=document.getElementById('ddlPro');\n"); myscript.Append("var pro=ddlpro.options[ddlpro.selectedIndex].innerText;\n"); //myscript.Append("var pro=document.getElementById('txtPro').value;\n"); myscript.Append("switch(pro) { \n"); myscript.Append("case '湖北':\n"); myscript.Append("FillData('" + GetCityStr("湖北") + "');\n"); myscript.Append("break;\n"); myscript.Append("case '河北':\n"); myscript.Append("FillData('" + GetCityStr("河北") + "');\n"); myscript.Append("break;\n"); myscript.Append("case '广东':\n"); myscript.Append("FillData('" + GetCityStr("广东") + "');\n"); myscript.Append("break;\n"); myscript.Append("case '河南':\n"); myscript.Append("FillData('" + GetCityStr("河南") + "');\n"); myscript.Append("break;}\n"); myscript.Append("}\n"); Page.ClientScript.RegisterClientScriptBlock(typeof(string), "city", myscript.ToString(), true); } private string GetCityStr(string pro) { string city = ""; switch (pro) { case "湖北": city = "武汉,黄冈,黄石,襄樊"; break; case "河北": city = "石家庄,唐山,承德,邯郸"; break; case "广东": city = "广州,佛山,深圳,珠海"; break; case "河南": city = "郑州,新乡,安阳,信阳"; break; } return city; } }
CallBack无刷新联动
前台代码:
无标题页
后台代码:
using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; public partial class callback_Default : System.Web.UI.Page,ICallbackEventHandler { private string _data; protected void Page_Load(object sender, EventArgs e) { } ICallbackEventHandler 成员 }
Ajax无刷新联动
该例子也要用到两个页面:oec203index.aspx和datapage.aspx. datapage.aspx主要用来回送要显示的数据
.aspx页面前台代码:
无标题页
datapage.aspx后台代码:
using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; public partial class ajax_datapage : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { string pro = Request.QueryString["pro"]; Response.Clear(); switch (pro) { case "湖北": Response.Write("武汉,黄冈,黄石,襄樊"); break; case "河北": Response.Write("石家庄,唐山,承德,邯郸"); break; case "广东": Response.Write("广州,佛山,深圳,珠海"); break; case "河南": Response.Write("郑州,新乡,安阳,信阳"); break; } } }
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