javascript：将一个对象作为参数传递给字符串中的onclick函数 [英] javascript: pass an object as the argument to a onclick function inside string
问题描述
我想将一个对象作为参数传递给字符串中的Onclick函数。如下所示：
I would like to pass an object as parameter to an Onclick function inside a string. Something like follwing:
function myfunction(obj,parentobj){
var o=document.createElement("div");
o.innerHTML='<input type="button" onclick="somelistener(' + obj + ')" />';
parentobj.appendChild(o.firstChild);
}
显然，这不起作用。任何人有任何想法？ THX！
Obviously, this doesn't work. Anyone has any idea? THX!
一个更完整的版本，如@Austin建议
A more complete version, as suggested by @Austin
<!DOCTYPE html>
<html>
<body>
<style type="text/css">
</style>
<p id="test">test</p>
<p id="objectid"></p>
<script>
function test(s){
document.getElementById("test").innerHTML+=s;
}
function somelistener(obj){
test(obj.id);
}
function myfunction(obj,parentobj){
var o=document.createElement("div");
o.innerHTML='<input type="button" onclick="somelistener(' + obj + ')" />';
o.onclick = function () {
someListener(obj)
}
parentobj.appendChild(o.firstChild);
}
myfunction(document.getElementById("objectid"),document.getElementById("test"));
</script>
</body>
</html>
推荐答案
上面的例子不起作用，因为输出 obj to text is [Object object] ，所以基本上，你正在调用 someListener（[Object object]）。
The above example does not work because the output of obj to text is [Object object], so essentially, you are calling someListener([Object object]).
当你在 o 中有元素的实例时，使用javascript绑定到它的点击：
While you have the instance of the element in o, bind to it's click using javascript:
function myfunction(obj,parentobj){
var o=document.createElement("div");
o.innerHTML='<input type="button" />';
o.onClick = function () {
someListener(obj)
}
parentobj.appendChild(o.firstChild);
}
I have created a working fiddle for you here: JSFiddle
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