如何使用xmlhttp.open发送多个变量？多个、如何使用、变量、open
2023-09-10 17:09:58
作者：心中的小鹿已撞死
好吧，我有这块code从中我从 W3Schools的花： -
Ok i have this piece of code from which i took from W3schools:-
<html>
<head>
<script type="text/javascript">
function showCustomer(str)
{
var xmlhttp;
if (str=="")
{
document.getElementById("txtHint").innerHTML="";
return;
}
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET","getcustomer.asp?q="+str,true);
xmlhttp.send();
}
</script>
</head>
<body>
<form action="">
<select name="customers" onchange="showCustomer(this.value)">
<option value="">Select a customer:</option>
<option value="ALFKI">Alfreds Futterkiste</option>
<option value="NORTS ">North/South</option>
<option value="WOLZA">Wolski Zajazd</option>
</select>
</form>
<br />
<div id="txtHint">Customer info will be listed here...</div>
</body>
</html>
现在我犯了一个形式，我想过去的两个变量，所以我怎么会通过两个变量在这个值 xmlhttp.open（GET，getcustomer.asp？Q =+ STR，真）; 。由于这件事情还没有被包括在内。
Now i made a form and i am passing two variables, so how i will pass the value of two variables in this xmlhttp.open("GET","getcustomer.asp?q="+str,true);. As this thing has not been included.
推荐答案
这是很容易。对于第一个变量，你用？，为之后的变量，你使用和功放;.例如，
It is easy. for the first variable, you use ?, for variables after that, you use &. For example.
var variables = "name=David&string=Hello World";
xmlhttp.open("GET","getcustomer.asp?" + variables,true);
和获取变量形成等形式，将其设置为拥有ID的（最简单的方法），并做
And to get variables form other forms, set them to have ID's (easiest way), and do
document.getElementById('theid').value;
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