Java基本问题-按钮单击事件 [英] Basic Javascript question - Button click event
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问题描述
我是Java语言的初学者，我在下面编写了此代码.
它有一个按钮，一个文本区域.单击按钮时，我调用一个javascript函数，该函数调用数组，对数组进行排序并填充textarea.
按钮onClientclick事件仅在我双击时执行.我希望单击事件可以执行此操作，单击事件将清除文本区域.如何获得单击事件以填充文本区域.
谢谢.
Hi,
I am a beginner in Javascript and I wrote this code below.
It has a button, a text area. When the button is clicked, I call a javascript function that calls an array, sorts the array and populates the textarea.
The button onClientclick event executes only when I double click. I want the single click event to do this, the single click event clears the text area instead. How do I get the single click event to populate the text area.
Thanks.
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<script language="javascript" type="text/javascript">
var SortArray = function () {
var myArr = ["asbestos", "zebra", "grey", "here", "bob"];
myArr.sort();
form1.txtJava.value = "";
for (key in myArr) {
document.forms[0]['txtJava'].value +=myArr[key];
};
};
</script>
<body>
<form id="form1" runat="server" >
<div>
<textarea name="txtJava" id="txtJava" rows="" cols="" ></textarea>
<asp:Button ID="Button1" runat="server" OnClientClick="SortArray()" Text="Button" />
</div>
</form>
</body>
</html>
推荐答案
因为您的页面正在回发到服务器，这就是您遇到此问题的原因.使用return flase;防止回发.
试试这个:
Hi,
Because your page is posting back to the server that''s why you are facing this problem. Usereturn flase;to prevent the postback.
Try this:
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<script language="javascript" type="text/javascript">
var SortArray = function () {
var myArr = ["asbestos", "zebra", "grey", "here", "bob"];
myArr.sort();
form1.txtJava.value = "";
for (key in myArr) {
document.forms[0]['txtJava'].value +=myArr[key];
}
return false;
}
</script>
<body>
<form id="form1" runat="server" >
<div>
<textarea name="txtJava" id="txtJava" rows="" cols="" ></textarea>
<asp:button id="Button1" runat="server" onclientclick="return SortArray();" text="Button" xmlns:asp="#unknown" />
</div>
</form>
</body>
</html>
--Amit
--Amit
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