Question

我有以下代码将事件监听器附加到表单提交。我要调用的功能是回调＆＃39;。事情就是这样：我不明白我应该如何将参数传递给函数（它应该是＆＃39;事件＆＃39;参数？）

if(form.addEventListener){
    form.addEventListener('submit', interrupt, false);  
}else if(form.attachEvent){
    form.attachEvent('onsubmit', interrupt);            
} 

function interrupt(event){
    //deal with form submission here
}

//OR  (???)

interrupt = function(event){
    //deal with form submission here
}

我知道这个问题可能看起来很基本，但我真的不明白它应该如何运作......

Answer 1

Run this example and look for console of browser. When bind dynamic event, the event is injected. For this, the function call must receive the first parameter

var input = document.getElementById('ipTest');

if(input.addEventListener){
    input.addEventListener('click', interrupt, false);  
}else if(input.attachEvent){
    input.attachEvent('onclick', interrupt);            
} 

function interrupt(event){
    console.log("Event: " + event);
}

<input type="button" value="Test" id="ipTest"/>

纯Javascript - 在表单提交eventlistener中执行回调

1 个答案: