一、使用RegisterClientScriptBlock输出js代码块
StringBuilder sb = new StringBuilder(); sb.Append("<input type="text" id="txtGo" name="txtGo" style=" 30px" >"); sb.Append("<input type="button" id="btnGo" name="btnGo" value="跳转" onclick="pagego();" >");
string scriptstrs = ""; scriptstrs += "function pagego(){"; scriptstrs += " var val = document.getElementById('txtGo').value;"; scriptstrs +=" if (val >"+PageCount+") {alert('不能大于'+"+PageCount+");}"; scriptstrs += "else {window.location.href = 'WordManager.aspx?page='+val;}}"; if (!Page.ClientScript.IsClientScriptBlockRegistered(this.GetType(), "keys")) { Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "keys", scriptstrs, true); }
二、使用 RegisterStartupScript输出一次性使用的js代码
string scriptstrs = "<script>alert('欢迎光临！');</script>"; if (!Page.ClientScript.IsStartupScriptRegistered(this.GetType(),"welcome")) { Page.ClientScript.RegisterStartupScript(this.GetType(), "welcome", scriptstrs); }
三、使用RegisterClientScriptInclude后台输出已有js文件
首先创建 js文件test.js
if (!Page.ClientScript.IsClientScriptIncludeRegistered(this.GetType(), "keys"))//判断keys是否已注册过 { Page.ClientScript.RegisterClientScriptInclude("keys", "testjs.js"); }