页面有三个Text,前两个用于输入数字,第三个用于实时显示前两个数字的和,应该怎么写?谢谢!
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- var s="^\d{2}\/((0?[1-9])|(1[0-2]))\/((3[0,1])|([1,2][0-9])|(0?[1-9]))$";var re = new RegExp(s);alert(re.test("01/1/1"));的问题
<head>
<script language=JavaScript>
function AA()
{
var LINT_T1 = document.getElementById("t1").value;
var LINT_T2 = document.getElementById("t2").value;
if(LINT_T1 == "")
{
LINT_T1 = 0;
}
if(LINT_T2 == "")
{
LINT_T2 = 0;
}
document.getElementById("t3").value = parseInt(LINT_T1) + parseInt(LINT_T2);
}
</script>
</head>
<body><INPUT type="text" name="t1" id="t1" onpropertyChange="AA()">
<INPUT type="text" name="t1" id="t2" onpropertyChange="AA()">
<INPUT type="text" name="t1" id="t3"></body>
</html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title> new document </title>
<meta name="generator" content="editplus" />
<meta name="author" content="Gao YiXiang" />
<meta name="email" content="[email protected]" />
<meta name="keywords" content="javascript dhtml dom" />
<meta name="description" content="I love web development." />
</head>
<body>
<input type="text" id="n1" />
+<input type="text" id="n2" /><br />
<input type="button" id="calc" value="Sum" /><input type="text" id="sum" /><br />
<script type="text/javascript">
<!--
calc.onclick = function()
{
var num1 = parseInt(n1.value);
var num2 = parseInt(n2.value);
// 容错处理
if (isNaN(num1)) num1 = 0;
if (isNaN(num2)) num2 = 0; sum.value = num1 + num2;
};
//-->
</script>
</body>
</html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<script>
function Compupte()
{
var op1=document.getElementById("op1");
var op2=document.getElementById("op2");
var result=document.getElementById("result");
if(op1.value==""||isNaN(op1.value))
{alert('操作数1不能为空并且不能为非整数!');op1.focus();return;}
if(op2.value==""||isNaN(op2.value))
{alert('操作数2不能为空并且不能为非整数!');op2.focus();return;}
result.value=parseFloat(op1.value)+parseFloat(op2.value);
}
</script>
</head>
<body>
<input type='text' id='op1'/>+
<input type='text' id='op2'/>=
<input type='text' id='result'/>
<br/>
<input type="button" value="计算" onclick="Compupte()"/>
</body>
</html>
<html>
<head>
<script language=JavaScript>
function AA()
{
var LINT_T1 = document.getElementById("t1").value;
var LINT_T2 = document.getElementById("t2").value;
if(LINT_T1 == "" || isNaN(LINT_T1))
{
LINT_T1 = 0;
}
if(LINT_T2 == "" || isNaN(LINT_T2))
{
LINT_T2 = 0;
}
document.getElementById("t3").value = parseInt(LINT_T1) + parseInt(LINT_T2);
}
</script>
</head>
<body><INPUT type="text" name="t1" id="t1" onpropertyChange="AA()">
<INPUT type="text" name="t1" id="t2" onpropertyChange="AA()">
<INPUT type="text" name="t1" id="t3"></body>
</html>