将 2 个值传递给 javascript 函数
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pass 2 values to a javascript function
提问by amit
i am trying to pass 2 values to a javascript xmlHttp request; THE values are being passed to the javascript function. i was successfully passing a single value to the javscript function, but now i need to pass 2 values. the bold values is a string name i want in the javascript.
我正在尝试将 2 个值传递给 javascript xmlHttp 请求；正在将值传递给 javascript 函数。我成功地将单个值传递给了 javscript 函数，但现在我需要传递 2 个值。粗体值是我想要在 javascript 中的字符串名称。
echo "<a href='#' class='thumb'><img class='thumb-img' value = ".$row->aid." onclick='getVote(".$row->aid.", **".$row->atitle."**)' src='images/roadies/th".$row->aid.".jpg' /> </a>";
one is a intand the other is a string
一个是int另一个是字符串
in the javascript, i am not sure how to receive these values. earlier i used to:
在 javascript 中，我不确定如何接收这些值。早些时候我曾经：
function getVote(int)
{
xmlhttp=GetXmlHttpObject();
if (xmlhttp==null)
{
alert ("Browser does not support HTTP Request");
return;
}
value = int;
for a single value. but now since there are 2 values to process, i dont know how to write the function for it; i am currently (unsuccessfully) trying this:
对于单个值。但现在由于有 2 个值要处理，我不知道如何为其编写函数；我目前（未成功）尝试此操作：
function getVote(int, name)
{
xmlhttp=GetXmlHttpObject();
if (xmlhttp==null)
{
alert ("Browser does not support HTTP Request");
return;
}
value = int;
name= char;
Please tell me how to do it?
请告诉我怎么做？
回答by Roland Bouman
If I understand correctly, your question is simply: how do javascript functions receive multiple arguments?
如果我理解正确，您的问题很简单：javascript 函数如何接收多个参数？
This is easy, just separate them by a comma in your function declaration, and pass multiple values, again separated by comma in the function call:
这很简单，只需在函数声明中用逗号分隔它们，并传递多个值，在函数调用中再次用逗号分隔：
function myFunc(one, two) {
alert(one); alert(two);
}
myFunc(1,2);
If you don't know in advance how many arguments to pass/receive, just declare the function without arguments, and use the built-in arguments array inside the function definition:
如果您事先不知道要传递/接收多少个参数，只需声明不带参数的函数，并在函数定义中使用内置参数数组：
function myFunc(){
for (var i=0, numArgs = arguments.length; i<numArgs; i++){
alert(arguments[i]);
}
}
The approach above is nice if you need to pass a list of values that are all equal, but when you have to deal with multiple arguments and some of them are optional, a better approach is to pass an object literal, and add the 'arguments' as properties:
如果您需要传递一个全部相等的值列表，上面的方法是很好的，但是当您必须处理多个参数并且其中一些是可选的时，更好的方法是传递一个对象文字，并添加 'arguments ' 作为属性：
function myFunc(obj){
if (typeof(obj.arg1)!="undefined") {
....
}
if (typeof(obj.arg2)!="undefined") {
....
}
...more handling...
}
myFunc({
arg1: "one"
, arg2: "two"
, ...more properties...
});
回答by Yuliy
You probably want to enclose the title in quotes. Let's say you have a row with aid123and title Hello World. You want to have onclick="getVote(123,'Hello World')"
您可能希望将标题括在引号中。假设您有一行aid123和标题Hello World。你想拥有onclick="getVote(123,'Hello World')"
回答by Lucas Jones
In JavaScript, you don't need to declare variable types in parameter lists. So, your function would be:
在 JavaScript 中，您不需要在参数列表中声明变量类型。所以，你的功能是：
function getVote(myInt, name) {
Make sure, though, when sending your value to the server, use myInt.toString()instead of just myInt, as you did with name.
但是，请确保在将您的值发送到服务器时，使用 ，myInt.toString()而不仅仅是myInt，就像您对name.
回答by Itay Moav -Malimovka
function getVote(int, name)
{
xmlhttp=GetXmlHttpObject();
if (xmlhttp==null)
{
alert ("Browser does not support HTTP Request");
return;
}
alert(int);
alert(name);
}
This variables are all ready defined in your function once you get them as parameters.
My code will alert them to show you they are deined
一旦您将它们作为参数，这些变量都已准备好在您的函数中定义。
我的代码会提醒他们向你展示他们是被定义的
