我可以使用onBlur事件对TextBox进行日期检查吗？

I want to do a Date Check on a TextBox with a onBlur event. I am not sure how to check the textbox in javascript on the aspx side. This is what I have so far

我想在带有onBlur事件的TextBox上进行日期检查。我不知道如何在aspx端检查javascript中的文本框。这就是我到目前为止所拥有的

TodayDate= new Date();
function checkEnteredDate() {
if (document.getElementById('txtDate') > TodayDate) {
alert("You cannot select a date later than today.");
document.getElementById(TodayDate);
} 
}

This is already a javascript function, I just cannot get the value in the textbox for a comparison. Any suggestions?

这已经是一个javascript函数,我只是无法在文本框中获取值进行比较。有什么建议?

5 个解决方案

#1

You could try passing the "this" to the function:

您可以尝试将“this”传递给函数:

<asp:TextBox ID="Text1" onblur="CheckEnteredDate(this);" runat="server" />

Edit: Here's how the javascript function would use that (roughly):

编辑:以下是javascript函数将如何使用(粗略地):

function CheckEnteredDate(passed) {
    if (new Date(passed.value) > new Date()) {
        alert('Date greater than today');
    }
}

5 个解决方案

#1

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