我想将回调传递到显示弹出窗口的函数中(为了方便起见，我在示例中将其设置为 iframe)。但是，当从对新打开的窗口的引用设置它时，我无法让 window.onerror 工作。我究竟做错了什么？ (在 Chrome 中测试)
嵌入式脚本运行器无法工作，所以这里有一个 fiddle http://jsfiddle.net/mendesjuan/PWSDF/35/
HTML
<button id="btn">New Window</button>
<button id="btn2">New Window 2</button>
<iframe name="popme"></iframe>
JavaScript
// Works
document.getElementById('btn').addEventListener('click', function () {
var win = window.open('', 'popme');
var doc = win.document;
doc.open();
doc.write(
"<html>" +
"<head>" +
"<scr" + "ipt>window.onerror = function() { alert(1); return true}</scr" + "ipt>" +
"<scr" + "ipt>badCall1()</scr" + "ipt>" +
"</head>" +
"<body>Nothing really</body>" +
"</html>"
);
doc.close();
});
// Doesn't work
document.getElementById('btn2').addEventListener('click', function () {
var win = window.open('', 'popme');
var doc = win.document;
win.onerror = function () {
alert(1);
return true;
}
doc.open();
doc.write(
"<html>" +
"<head>" +
"<scr" + "ipt>badCall2()</scr" + "ipt>" +
"</head>" +
"<body>Nothing really 2</body>" +
"</html>");
doc.close()
});
最佳答案
打开文档后附加onerror处理程序似乎有效。但是，我不确定为什么会这样。
JSBin(仅在 Chrome 中测试):http://jsbin.com/seveniqubi/1/edit?html,js,output
document.getElementById('btn2').addEventListener('click', function(e) {
var win = window.open('', 'popme');
var doc = win.document;
doc.open();
win.onerror = function(message, url, line) {
alert(message);
return true;
};
doc.write(
"<html>"+"<head>" +
"<scr" + "ipt>badCall2()</scr" + "ipt>" +"</head>" +
"<body>Nothing really 2</body>" + "</html>");
doc.close();
});
关于javascript - 在弹出窗口上设置 onerror 处理程序，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/26811956/