jQuery点击事件多次触发

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

$('.bed').one(function(){ })

文档:

http://api.jquery.com/one/

2019-03-19 23:49:08

其他回答

$('.bed').one(function(){ })

文档:

http://api.jquery.com/one/

2019-03-19 23:49:08

因为加价，我遇到了一个问题。

HTML:

<div class="myclass">
 <div class="inner">

  <div class="myclass">
   <a href="#">Click Me</a>
  </div>

 </div>
</div>

jQuery

$('.myclass').on('click', 'a', function(event) { ... } );

你注意到我在html中有两次相同的类'myclass'，所以它为每个div实例调用click。

2015-09-18 09:58:44

在我的案例中，我使用的是“委托”，所以这些解决方案都不起作用。我相信这是按钮出现多次通过ajax调用，导致多次点击问题。解决方案是使用超时，所以只有最后一次点击被识别:

var t;
$('body').delegate( '.mybutton', 'click', function(){
    // clear the timeout
    clearTimeout(t);
    // Delay the actionable script by 500ms
    t = setTimeout( function(){
        // do something here
    },500)
})

2017-09-26 19:26:54

https://jsfiddle.net/0vgchj9n/1/

为了确保事件总是只触发一次，可以使用Jquery .one()。JQuery可以确保你的事件处理程序只被调用一次。此外，您还可以订阅一个事件处理程序，以便在完成当前单击操作的处理后允许进一步单击。

<div id="testDiv">
  <button class="testClass">Test Button</button>
</div>

…

var subscribeClickEvent = function() {$("#testDiv").one("click", ".testClass", clickHandler);};

function clickHandler() {
  //... perform the tasks  
  alert("you clicked the button");
  //... subscribe the click handler again when the processing of current click operation is complete  
  subscribeClickEvent();
}

subscribeClickEvent();

2016-09-04 23:40:32

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;
    });`

2018-06-27 12:04:46

jQuery点击事件多次触发

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