Javascript 在asp.net中使用页面方法时无法清除文本框
我一直在努力使用.net页面方法。我有一个文本框,如果数据库调用返回的值无效或不在表中,我想清除它,现在有一个javascript显示弹出消息,但无法清除字段。这是我的密码Javascript 在asp.net中使用页面方法时无法清除文本框,javascript,asp.net,.net,pagemethods,Javascript,Asp.net,.net,Pagemethods,我一直在努力使用.net页面方法。我有一个文本框,如果数据库调用返回的值无效或不在表中,我想清除它,现在有一个javascript显示弹出消息,但无法清除字段。这是我的密码 aspx code: asp:TextBox name="LoanNumber" ID="LoanNumber" runat="server" size="18" style="font-size: 9pt" ValidationGroup="requiredCheck" on
aspx code:
asp:TextBox name="LoanNumber" ID="LoanNumber" runat="server" size="18"
style="font-size: 9pt" ValidationGroup="requiredCheck"
onchange="javascript:SetFocus();loanCheckup();resetOnChange();" MaxLength="10"
ToolTip="Enter a Loan Number" AutoPostBack="false"></asp:TextBox>
<asp:RequiredFieldValidator ID="reqLoanNumExists" runat="server" ControlToValidate="LoanNumber" Display="Dynamic"
ErrorMessage="Required Loan Number"
SetFocusOnError="true" ValidationGroup="requiredCheck">Required! </asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="reqLoanNumber"
ControlToValidate="LoanNumber" ValidationExpression="\d+" Display="Static"
EnableClientScript="true" SetFocusOnError="true"
ErrorMessage="Accepts Numbers Only!" runat="server">
</asp:RegularExpressionValidator>
我的java脚本:
function loanCheckup() {
// var txtLoanNum = document.getElementById('<%=LoanNumber.ClientID %>').value;
var txtLoanNum = document.getElementById('LoanNumber').value;
//return Regex.IsMatch(txtLoanNum, "^-?\d*[0-9]?(|.\d*[0-9]|,\d*[0-9])?$");
PageMethods.getRowValue(txtLoanNum, successLoan,failLoan);
}
function successLoan(tmpResultPass) {
alert(tmpResultPass);
}
function failLoan(tmpResultFail ) {
alert(tmpResultFail);
document.getElementById('LoanNumber').value = "";
}
函数loanCheckup(){
//var txtLoanNum=document.getElementById(“”).value;
var txtLoanNum=document.getElementById('LoanNumber').value;
//返回Regex.IsMatch(txtLoanNum,“^-?\d*[0-9]?(|.\d*[0-9]|,\d*[0-9])?$”;
getRowValue(txtLoanNum、successLoan、failLoan);
}
功能成功贷款(tmpResultPass){
警报(TMPRELTPASS);
}
功能失效贷款(TMPRELTFAIL){
警报(TMPRELTFAIL);
document.getElementById('LoannNumber')。value=“”;
}
现在,当捕获到异常时,将显示TMPRELTFAIL,但清除文本字段的下一行永远不会执行。我有一个脚本管理器,启用pagemethods=true。除清除文本框字段外,所有操作都正常。非常感谢您的帮助。未注释的控件肯定不起作用,因为客户端控件与服务器端控件没有相同的ID。如果查看页面源代码,您的文本框不再称为'LoannNumber',因此.getElementById()将不起作用 解决办法是:
我尝试了这两种建议,但都不起作用。有没有更好的方法来调用javascript中的代码,而不是让它保持静态?提前谢谢可能还有一个错误。你能在某处发布一个实时页面吗?否则:浏览器控制台中会显示什么?报告的JS错误是什么(如果有)?
function loanCheckup() {
// var txtLoanNum = document.getElementById('<%=LoanNumber.ClientID %>').value;
var txtLoanNum = document.getElementById('LoanNumber').value;
//return Regex.IsMatch(txtLoanNum, "^-?\d*[0-9]?(|.\d*[0-9]|,\d*[0-9])?$");
PageMethods.getRowValue(txtLoanNum, successLoan,failLoan);
}
function successLoan(tmpResultPass) {
alert(tmpResultPass);
}
function failLoan(tmpResultFail ) {
alert(tmpResultFail);
document.getElementById('LoanNumber').value = "";
}