带有ASP.net的Javascript [英] Javascript with ASP.net

问题描述

在我的项目中，我想使用javascript设置文本框，标签，hiddenfield和dropdownlist的值.
我可以使用以下代码设置文本框的值

In my Project i want to set the values of textbox, label, hiddenfield and dropdownlist using javascript.
I can set the value of textbox using the following code

document.getElementById(''ctl00_ContentPlaceHolder1_txtWsaleRate'').value=Product_array[8];

但是我不能设置标签，hiddenfield和dropdownlist的值.我如何设置这些控件的值.请帮助我.

But i cant set the values of label, hiddenfield and dropdownlist. How can i set the values of these controls. Please help me.

推荐答案

用于设置文本框值的代码是:

YOur code for setting textbox value is:

document.getElementById('ctl00_ContentPlaceHolder1_txtWsaleRate').value=Product_array[8];

我建议您这样做:

I suggest you to do it this way:

document.getElementById("<%= txtWsaleRate.ClientID %>").value=Product_array[8];

要使用JavaScript设置标签文本，请执行以下操作:

To set text of the label using JavaScript:

document.getElementById("lableID").innerHTML = "somevalue";

要使用JavaScript设置隐藏字段的值，请执行以下操作:

To set value of the hidden field using JavaScript:

document.getElementById("<%=hiddenfieldID.ClientID %>").value;

最后，要使用JavaScript设置下拉列表的选定值:

Finally, To set the selected value of the dropdownlist using JavaScript:

document.getElementById("ddlTo").selectedIndex == indexNumber;

indexNumber是一个整数值.将其替换为所需的索引.

希望有帮助！

indexNumber is an integer value. Replace it with the index you want.

Hope that helps!

这篇关于带有ASP.net的Javascript的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！