Question

我想在网页中添加以下功能：如果用户在30秒内未按下“接受”按钮，则会自动执行$('#popupBoxAccept').click( function() {..}。

$(document).ready(function() {
    loadPopupBox();
});

function loadPopupBox() {   // to load the Popupbox 
    $('#popup_box').fadeIn("slow");     
}

$('#popupBoxAccept').click( function() {            
    //...
});

$('#popupBoxDecline').click( function() {           
    //...
});

<div id="popup_box">
    <a id="popupBoxAccept">Accept</a>
    <a id="popupBoxDecline">Decline</a>     
</div>

Answer 1

jsFiddle demo

var tim = setTimeout(function(){
    $('#popupBoxAccept').click();
},30000);

在手册中，点击：

$('#popupBoxAccept').click(function(){
     clearTimeout(tim);
      // ........
});

正如@Elias所建议的那样：

$('#popupBoxDecline').click( function() {
    clearTimeout(tim);           
    //...
});

Answer 2

一个简单的选择是使用标志和setTimeout函数：

var clicked = false;
$("#popupBoxAccept").click(function() {
    clicked = true;
    //...
});

setTimeout(function() {
    if (!clicked) {
        $("#popupBoxAccept").click();
    }
}, 30000);

Answer 3

试试这个

setTimeOut(function(){
  $('#popupBoxAccept').click( function() {            
    //...
});
}, 30000);

Answer 4

设置超时：

var tim;//global, I'll provide a (more complex) solution that doesn't need them, too
function loadPopupBox() {   // to load the Popupbox 
    $('#popup_box').fadeIn("slow");
    tim = setTimeout(function()
    {
        $('#popup_box').click();
    },30000);
}

$('#popupBoxAccept').click( function() {            
    clearTimeout(tim);
});

现在，不使用 EVIL 全局变量：

$(document).ready(function()
{
    (function(popup,accept,decline)
    {
        popup.fadeIn("slow");
        var tim = setTimeout(function()
        {
            accept.click();//<-- access to reference is preserved
        },30000);
        accept.click(function()
        {
            clearTimeout(tim);
            //do accept stuff
        });
        decline.click(function()
        {
            clearTimeout(tim);//<-- need that here, too!
            //do decline stuff
        });
    })($('#popup_box'),$('#popupBoxAccept'),$('#popupBoxDecline'));
    //pass all 3 elements as argument --> less typing, and is more efficient:
    //the DOM is only searched once for each element
});

为什么这有用？简单：您现在可以在另一个上下文中使用var tim，而不会丢失对超时的引用。闭包，名称说明了一切：所有变量和引用都在同一范围内整齐地捆绑在一起，并且无法访问，但是在声明的范围内：

var foo = (function()
{
    var invisible = 'Now you see me';
    return function()
    {
        return invisible;
    }
};
console.log(invisible);//<-- undefined
var invisible = 'Now you don\'t';
console.log(foo());//<-- Now you see me
console.log(invisible);//Now you don\'t

Answer 5

尝试将其放入$(document).ready()来电：

setTimeout(function() {
    if(!clicked) {
        $('#popupBoxAccept').click();
    }
}, 30000);

然后改变

$('#popupBoxAccept').click( function() {
    //...
});

到

var clicked = false;
$('#popupBoxAccept').click( function() {
    clicked = true;
    //...
});

如果未按下按钮，则在30秒内自动执行该功能

5 个答案:

jsFiddle demo