一旦出现，如何在Bootstrap模态中设置特定字段的焦点 [英] How to set the focus for a particular field in a Bootstrap modal, once it appears

问题描述

我已经看过几个关于bootstrap模态的问题，但没有一个完全像这样，所以我会继续。

I've seen a couple of questions in regards to bootstrap modals, but none exactly like this, so I'll go ahead.

我有一个模态我打电话就像这样...

I have a modal that I call onclick like so...

$(".modal-link").click(function(event){
  $("#modal-content").modal('show');
});

这很好用，但是当我显示模态时我想专注于第一个输入元素..在可能的情况下，第一个输入元素的id为#photo_name。

This works fine, but when I show the modal I want to focus on the first input element... In may case the first input element has an id of #photo_name.

所以我试过

   $(".modal-link").click(function(event){
     $("#modal-content").modal('show');
     $("input#photo_name").focus();
   });

但这无济于事。最后，我尝试绑定到'show'事件，但即便如此，输入也不会集中。最后只是为了测试，因为我怀疑这是关于js加载顺序，我放入一个setTimeout只是为了看看我是否延迟了一秒，焦点是否有效，是的，它有效！但这种方法显然是废话。有没有办法在不使用setTimeout的情况下获得与下面相同的效果？

But this was to no avail. Lastly, I tried binding to the 'show' event but even so, the input won't focus. Lastly just for testing, as I had a suspiscion this is about the js loading order, I put in a setTimeout just to see if I delay a second, will the focus work, and yes, it works! But this method is obviously crap. Is there some way to have the same effect as below without using a setTimeout?

  $("#modal-content").on('show', function(event){
    window.setTimeout(function(){
      $(event.currentTarget).find('input#photo_name').first().focus()
    }, 0500);
  });

推荐答案

试试这个

以下是旧的 DEMO ：

Here is the old DEMO:

编辑：
（这是一个工作 DEMO

$(document).ready(function() {
    $('#modal-content').modal('show');
    $('#modal-content').on('shown', function() {
        $("#txtname").focus();
    })
});

启动bootstrap 3需要使用shown.bs.modal事件：

Starting bootstrap 3 need to use shown.bs.modal event:

$('#modal-content').on('shown.bs.modal', function() {
    $("#txtname").focus();
})

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