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How to open select element using jquery

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青春惊慌失措
青春惊慌失措 2020-12-06 17:58

I have a select element as follows. i want to open it without user having to click on it.
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  • 臣服心动
    2020-12-06 18:21

    I have a complete solution for this problem here Is it possible to use JS to open an HTML select to show its option list?. In this scheme the select can be opened correctly, easy, with all its functionality and preserving the page layout. That solution is safe, simple and compatible with Internet Explorer, FireFox and Chrome.

    Thank's!

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  • 野趣味
    2020-12-06 18:27

    You can find a similar question here: How can you programmatically tell an HTML SELECT to drop down (for example, due to mouseover)?

    I don't think there is a single solution that would work in every browser.

    I can confirm that using document.createEvent() and .dispatchEvent() (as explained at the above link) works great in WebKit browsers (Safari, Chrome) but not in Firefox, Opera and IE.

    However, you can try combining the different solutions listed there.

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  • 既然无缘
    2020-12-06 18:32

    You will pass a CSS selector to openSelect() and it will open the select element for you.

    var openSelect = function(selector){
     var element = $(selector)[0], worked = false;
    if (document.createEvent) { // all browsers
        var e = document.createEvent("MouseEvents");
        e.initMouseEvent("mousedown", true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
        worked = element.dispatchEvent(e);
    } else if (element.fireEvent) { // ie
        worked = element.fireEvent("onmousedown");
    }
    if (!worked) { // unknown browser / error
        alert("It didn't worked in your browser.");
    }   
}

$(function(){ // when DOM is ready
   // open .select element
   openSelect('.select'); 
});

    Here's a fiddle: http://jsfiddle.net/Z48wF/1/

    Source: How to open the select input using jquery @stackoverflow.com

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  • 悲&欢浪女
    2020-12-06 18:38 
    $(document).ready(function(){  
  $('#selId').on('click',function(){
     //do stuff here
  });
  $('#selId').trigger('click');
});

    This should work.

    Update: 

    $(document).ready(function(){  
  $('#selId').click(function(){
     //do stuff here
  });
  $('#selId').click();
});

    Very similar to the other answer, but that should do it also rather then "click" you can try "focus"

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