[英]input's value isn't set by JavaScript (or is it?)
I'm trying to pass information from js to codebehind. 我正在尝试将信息从js传递到codebehind。 When setting a breakpoint at the end of the js - The (Firefox) debugger (-js) shows me that an input
's value has been set, while the (Firefox) Inspector (-html) shows it hasn't . 当在JS结束设置断点-在(火狐) 调试器 (-js)让我发现了input
的值已定,而(火狐) 督察 (-html)表明它没有 。 When reaching the codebehind - it hasn't been set. 当到达代码隐藏 -它没有被设置。 Why? 为什么?
js to set the value and click a button that will then call the codebehind: js设置值并单击一个按钮,然后将调用其背后的代码:
<script type="text/javascript">
function doit(s, input, button)
{
var i = document.getElementById(input);
i.innerHTML = s;
var b = document.getElementById(button);
b.click();
}
</script>
html with hidden input and button (for calling the codebehind) and a button to begin all of this, and a div to show the result: 带有隐藏的输入和按钮(用于调用代码背后的代码)的html和一个用于开始所有这些操作的按钮,以及一个用于显示结果的div:
<asp:Button ID="Button1" runat="server" Text="Test" OnClick="Button1_Click" />
<div style="display: none;">
<input id="info" runat="server" />
<asp:Button ID="Button2" runat="server" OnClick="Button2_Click" />
</div>
<div id="result" runat="server">
</div>
C# codebehind to call the js, and to show the result: C#代码隐藏以调用js,并显示结果:
protected void Button1_Click(object sender, EventArgs e)
{
ClientScriptManager cs = Page.ClientScript;
Type pageType = GetType();
cs.RegisterStartupScript(
GetType(),
"aName",
"doit('abc', '" + info.ClientID + "','" + Button2.ClientID + "');",
true);
}
protected void Button2_Click(object sender, EventArgs e)
{
result.InnerText = info.Value;
}
You need to set value
property of input instead of innerHTML
您需要设置输入的value
属性,而不是innerHTML
Change 更改
i.innerHTML = s;
To 至
i.value = s;
You want to use value
to set the value of an input: 您要使用value
来设置输入的值:
function doit(s, input, button) {
document.getElementById(input).value = s;
var b = document.getElementById(button);
b.click();
}
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