javascript stopPropagation/cancelBubble/preventDefault 在 Firefox 中不工作

Question

我正在尝试制作一个弹出窗口，以防止用户在点击取消时转到结果页面。此代码适用于 Chrome、Safari、Opera、Microsoft Edge 和 Internet Explorer 11，但不适用于 Firefox。

function leavingAlert(){
var check = confirm("You are about to leave the site! You may be going to a website that doesn't provide security. Do you wish to continue?");
if(check){
this.target="_blank"
    return true;    
}else{
event.cancelBubble = true;

    return false;
}
}
//WORKING FOR ALL NON-IFRAME LINKS
var container = document.getElementById("wrapper");
var allATags = wrapper.getElementsByTagName("A");


for(var i = 0, len = allATags.length; i < len; i++){
    var link = allATags[i];
    //var pat = /^https?:\/\//i;
    var pat = new RegExp("https://example.com");
    var pat2 = new RegExp("javascript");
    if(!pat.test(link.href)){ 
        if(!pat2.test(link.href)){
            link.onclick = leavingAlert;

        }
    }

}

我也用过这些而不是 event.cancelBubble 但运气不好：

event.preventDefault ? event.preventDefault() : event.returnValue = false;

和

event.stopImmediatePropagation;

和

event.stopPropagation;

在我实现此代码的地方，我目前无法使用 jQuery，因此最好是简单的 Javascript 答案，谢谢！

Answer 1

使用 event 作为全局变量不是标准的 Javascript，Firefox 中也没有实现。它应该作为 onclick 处理程序的参数访问。

function leavingAlert(event){
    var check = confirm("You are about to leave the site! You may be going to a website that doesn't provide security. Do you wish to continue?");
    if(check){
        this.target="_blank";
        return true;    
    }else{
        event.cancelBubble = true;

        return false;
    }
}

Answer 2

这个问题似乎与 getElementsByTagName("A") 有关，但在 FF 中实现是区分大小写的

var allATags = wrapper.getElementsByTagName("a");

javascript stopPropagation/cancelBubble/preventDefault 在 Firefox 中不工作

javascript stopPropagation/cancelBubble/preventDefault not working in Firefox

javascript

firefox

preventdefault

stoppropagation