如何将参数传递给Event.observe的处理程序

Question

prototype.js具有以下功能

Event.observe(document, "dom:loaded", foo_function);

在执行foo_function之前，它等待document完成加载。如何将参数传递给foo_function？类似的东西

Event.observe(document, "dom:loaded", foo_function, {arg1: bar_argument, arg2: baz_argument})

Answer 1

Event.observe(document, "dom:loaded", (function(e, bar_argument, baz_argument) {
    //now bar_argument = bar,and baz_argument = baz
}).bindAsEventListener(this, bar, baz));

Answer 2

对于使用element.observe并提取命名函数以获得更干净代码的人：

(function main() {
    let myInteger = 0;
    document.observe('dom:loaded', onDOMLoaded.bindAsEventListener(this, myInteger));
})()
function onDOMLoaded(event, integer) {
    alert(integer);
}