没错啊!
刚测试过了
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<script type="text/javascript">
var c=function(){
var test1=document.getElementById("test1").value*1;
var test2=document.getElementById("test2").value*1;
document.getElementById("test3").value=test1+test2;
};
</script> <BODY>
<input type="text" name="test1">
<input type="text" name="test2">
<input type="text" name="test3">
<input type="button" onclick="c()"/>
</BODY>
</HTML>
刚测试过了
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<script type="text/javascript">
var c=function(){
var test1=document.getElementById("test1").value*1;
var test2=document.getElementById("test2").value*1;
document.getElementById("test3").value=test1+test2;
};
</script> <BODY>
<input type="text" name="test1">
<input type="text" name="test2">
<input type="text" name="test3">
<input type="button" onclick="c()"/>
</BODY>
</HTML>
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<script type="text/javascript">
var c=function(){
var test1=document.getElementById("test1").value*1;
var test2=document.getElementById("test2").value*1;
document.getElementById("test3").value= Math.round((test1+test2)*1000)/1000;
};
</script> <BODY>
<input type="text" name="test1">
<input type="text" name="test2">
<input type="text" name="test3">
<input type="button" onclick="c()"/>
</BODY>
</HTML>