为什么功能仅在第二次点击时起作用?

时间:2015-06-18 15:27:29

标签: javascript jquery

我正在尝试通过表单提交数据,当点击提交按钮时,我希望某些图片随style.display = 'none';消失。目前,我必须在图像消失之前单击按钮两次。有没有办法在第一次点击时执行此操作?

HTML:

<form action="/create_post/" method="POST" id="post-form">
    <div class="col-sm-4" id="toprow">
        <h4 style="font-family:verdana"> Models </h4>
        <img src='{% static 'images/USAcomplete2.png' %}' class="img-responsive thumbnail" id='gbimg' >
        <div class="btn-toolbar">
            <button type="submit" name="model" value="test" class="btn btn-default">test</button>
            <button type="submit" name="model" value="test2" class="btn btn-default">test2</button>
            <button type="submit" name="model" value="test3" class="btn btn-default">test3</button>
        </div>
    </div>
</form>

JS:

$('#post-form').on('submit', function(event) {
    event.preventDefault();
    console.log("form submitted!")
    create_post();
});

function create_post() {
    console.log("create post is working!");
    $("button").click(function() {
        var cbtn = $(this);
        var btnval = cbtn.val();
        console.log(btnval);
        document.getElementById('gbimg').style.display = 'none';
    });

    //$.ajax({
    //    url : "create_post/",
    //    type : "POST",
    //    data : { model : 
};

2 个答案:

答案 0 :(得分:2)

如果您的<button>执行表单的submit函数,则只需在提交表单时删除按钮,而不是在create_post()方法中添加点击处理程序。所以:

$('#post-form').on('submit', function(event) {
    event.preventDefault();
    console.log("form submitted!");

    var cbtn = $("button");
    var btnval = cbtn.val();
    console.log(btnval);
    document.getElementById('gbimg').style.display = 'none';

    create_post();
});

function create_post() {
    console.log("create post is working!");

    //$.ajax({
    //    url : "create_post/",
    //    type : "POST",
    //    data : { model : 
};

答案 1 :(得分:1)

将按钮点击处理程序移到create_post函数之外:

$(document).ready(function () {
    $('#post-form').on('submit', function(event) {
        event.preventDefault();
        console.log("form submitted!")
        create_post();
    });

    function create_post() {
        console.log("create post is working!");
        var cbtn = $("button");
        var btnval = cbtn.val();
        console.log(btnval);
        document.getElementById('gbimg').style.display = 'none';

        //$.ajax({
        //    url : "create_post/",
        //    type : "POST",
        //    data : { model : 
    };
});