我试图在Javascript中编写一个视频扑克游戏,作为一种获得它的基础知识的方式,我遇到了一个问题,jQuery点击事件处理程序被多次触发。

They're attached to buttons for placing a bet, and it works fine for placing a bet on the first hand during a game (firing only once); but in betting for the second hand, it fires the click event twice each time a bet or place bet button is pressed (so twice the correct amount is bet for each press). Overall, it follows this pattern for number of times the click event is fired when pressing a bet button once--where the ith term of the sequence is for the betting of the ith hand from the beginning of the game: 1, 2, 4, 7, 11, 16, 22, 29, 37, 46, which appears to be n(n+1)/2 + 1 for whatever that's worth--and I wasn't smart enough to figure that out, I used OEIS. :)

这是一个点击事件处理程序的函数;希望这很容易理解(如果不容易,请告诉我,我也想在这方面做得更好):

/** The following function keeps track of bet buttons that are pressed, until place button is pressed to place bet. **/
function pushingBetButtons() {
    $("#money").text("Money left: $" + player.money); // displays money player has left

    $(".bet").click(function() {
        var amount = 0; // holds the amount of money the player bet on this click
        if($(this).attr("id") == "bet1") { // the player just bet $1
            amount = 1;
        } else if($(this).attr("id") == "bet5") { // etc.
            amount = 5;
        } else if($(this).attr("id") == "bet25") {
            amount = 25;
        } else if($(this).attr("id") == "bet100") {
            amount = 100;
        } else if($(this).attr("id") == "bet500") {
            amount = 500;
        } else if($(this).attr("id") == "bet1000") {
            amount = 1000;
        }
        if(player.money >= amount) { // check whether the player has this much to bet
            player.bet += amount; // add what was just bet by clicking that button to the total bet on this hand
            player.money -= amount; // and, of course, subtract it from player's current pot
            $("#money").text("Money left: $" + player.money); // then redisplay what the player has left
        } else {
            alert("You don't have $" + amount + " to bet.");
        }
    });

    $("#place").click(function() {
        if(player.bet == 0) { // player didn't bet anything on this hand
            alert("Please place a bet first.");
        } else {
            $("#card_para").css("display", "block"); // now show the cards
            $(".card").bind("click", cardClicked); // and set up the event handler for the cards
            $("#bet_buttons_para").css("display", "none"); // hide the bet buttons and place bet button
            $("#redraw").css("display", "block"); // and reshow the button for redrawing the hand
            player.bet = 0; // reset the bet for betting on the next hand
            drawNewHand(); // draw the cards
        }
    });
}

如果你有任何想法或建议,或者我的问题的解决方案与这里的另一个问题的解决方案相似,请告诉我(我看过许多类似标题的帖子,但没有幸运地找到一个适合我的解决方案)。


当前回答

我有这个问题与动态生成的链接:

美元(文档)。在('点击','#mylink',函数({…做东西…});

我发现用“body”替换文档可以解决这个问题:

美元(的身体)。在('点击','#mylink',函数({…做东西…});

其他回答

如果你发现.off() .unbind()或. stoppropagation()仍然不能解决你的特定问题,尝试使用. stopimmediatepropagation()在你只是想要你的事件被处理而没有任何冒泡并且不影响任何其他已经被处理的事件的情况下工作得很好。喜欢的东西:

$(".bet").click(function(event) {
  event.stopImmediatePropagation();
  //Do Stuff
});

真管用!

在我的情况下,onclick事件被多次触发,因为我已经做了一个通用的事件处理程序比较

  `$('div').on("click", 'a[data-toggle="tab"]',function () {
        console.log("dynamic bootstrap tab clicked");
        var href = $(this).attr('href');
        window.location.hash = href;
   });`

更改为

    `$('div#mainData').on("click", 'a[data-toggle="tab"]',function () {
        console.log("dynamic bootstrap tab clicked");
        var href = $(this).attr('href');
        window.location.hash = href;
    });`

还必须为静态和动态点击,静态选项卡点击创建单独的处理程序

    `$('a[data-toggle="tab"]').on("click",function () {
        console.log("static bootstrap tab clicked");
        var href = $(this).attr('href');
        window.location.hash = href;
    });`

在我的例子中,我用<script>标记在页面上加载了两次相同的*.js文件,所以两个文件都将事件处理程序附加到元素上。我删除了重复的声明,这就解决了问题。

$(element).click(function (e)
{
  if(e.timeStamp !== 0) // This will prevent event triggering more then once
   {
      //do your stuff
   }
}

参考@尖锐的回答。如果在循环中,可以通过这样做避免多次触发单击事件:

 $(".bet").each(function(i,item){
       $(this).on({
            click:function(){
                //TRIGGERS ONES
            if(i){
              console.log(i); 
                //DO YOUR THING HERE
            }
            
            }
        });

});