增加弹出背景的高度

Question

我想增加弹出背景的高度，同时从下拉列表中选择项目。弹出窗口的背景应该等于下拉列表的高度，同时选择项目。

此外，如果我点击弹出背景外面，它就会消失。我想显示弹出背景，直到从下拉列表中选择任何项目。

Html

// use this for start recieving notification (enable)


[[UIApplication sharedApplication] registerForRemoteNotifications];

// use this for stop recieving notification (disable)

[[UIApplication sharedApplication] unregisterForRemoteNotifications];

CSS

<div class="maintext">
    <h2> Main text goes here...</h2>
</div>
<div id="boxes">
    <div id="dialog" class="window">
        <div id="san">
            <section>
                <select class="cs-select cs-skin-elastic">
                    <option value="" disabled selected>Select a Country</option>
                    <option value="france" data-class="flag-france">France</option>
                    <option value="brazil" data-class="flag-brazil">Brazil</option>
                    <option value="argentina" data-class="flag-argentina">Argentina</option>
                    <option value="south-africa" data-class="flag-safrica">South Africa</option>
                </select>
            </section>
        </div>
    </div>
    <div style="width: 2478px; font-size: 32pt; color: white; height: 1202px; display: none; opacity: 0.4;" id="mask"></div>
</div>

Jquery的

#mask {
  position:absolute;
  left:0;
  top:0;
  z-index:9000;
  background-color:#26262c;
  display:none;
}  
#boxes .window {
  position:absolute;
  left:0;
  top:0;
  width:440px;
  height:850px;
  display:none;
  z-index:9999;
  padding:20px;
  border-radius: 5px;
  text-align: center;
}
#boxes #dialog {
  width:450px; 
  height:auto;
  padding: 10px 10px 10px 10px;
  background-color:#ffffff;
  font-size: 15pt;
}

.agree:hover{
  background-color: #D1D1D1;
}
.popupoption:hover{
    background-color:#D1D1D1;
    color: green;
}
.popupoption2:hover{
    color: red;
}

DEMO HERE

Answer 1

将此javascript添加到您的代码中，它将解决您的身高问题。如果尚未选择选择框，它还将限制为关闭弹出窗口。从select options中选择任何值后，您就可以使弹出窗口消失。

$(document).ready(function() {  

    var id = '#dialog';

    //Get the screen height and width
    var maskHeight = $(document).height();
    var maskWidth = $(window).width();

    //Set heigth and width to mask to fill up the whole screen
    $('#mask').css({'width':maskWidth,'height':maskHeight});

    //transition effect     
    $('#mask').fadeIn(500); 
    $('#mask').fadeTo("slow",0.9);  

    //Get the window height and width
    var winH = $(window).height();
    var winW = $(window).width();

    //Set the popup window to center
    $(id).css('top',  winH/2-$(id).height()/2);
    $(id).css('left', winW/2-$(id).width()/2);

    //transition effect
    $(id).fadeIn(2000);     

//if close button is clicked
$('.window .close').click(function (e) {
    //Cancel the link behavior
    e.preventDefault();

    $('#mask').hide();
    $('.window').hide();
});     

//if mask is clicked
$('#mask').click(function () {
   var val =  $( ".cs-select option:selected" ).text();
   if(val == 'Select a Country'){
    return;
    }
    $(this).hide();
    $('.window').hide();
});         

   $(document).click(function () {
       if (!$(".cs-select ").is(":focus")) {
        $('#dialog').css({'height':23});
       }else{
        var height = 17;
        $('.cs-select option').each(function (item) {
        height = height +17;
        })
       if($('#dialog').height() < 25){
       $('#dialog').css({'height':height});
      }else{
     $('#dialog').css({'height':23});
      }
     }
  });   

});

试试这段代码。它将根据select输入中列出的选项设置弹出高度。无论有多少选项，都会动态计算高度。

Answer 2

结帐此代码段，假设<select>身高为20px。

$(document).ready(function() {	

		var id = '#dialog';
	
		//Get the screen height and width
		var maskHeight = $(document).height();
		var maskWidth = $(window).width();
		
		var selectElement = $('.cs-select');
		
		selectElement.parent('section').css('height', (20 * selectElement.children().length) + 'px');
	
		//Set heigth and width to mask to fill up the whole screen
		$('#mask').css({'width':maskWidth,'height':maskHeight});
		
		//transition effect		
		$('#mask').fadeIn(500);	
		$('#mask').fadeTo("slow",0.9);	
	
		//Get the window height and width
		var winH = $(window).height();
		var winW = $(window).width();
              
		//Set the popup window to center
		$(id).css('top',  winH/2-$(id).height()/2);
		$(id).css('left', winW/2-$(id).width()/2);
	
		//transition effect
		$(id).fadeIn(2000); 	
	
	//if close button is clicked
	$('.window .close').click(function (e) {
		//Cancel the link behavior
		e.preventDefault();
		
		$('#mask').hide();
		$('.window').hide();
	});		
	
	//if mask is clicked
	/*
	$('#mask').click(function () {
		$(this).hide();
		$('.window').hide();
	});		
	*/
	$(selectElement).on('change', function(){
		$('#mask, .window').hide();
	});
});

#mask {
  position:absolute;
  left:0;
  top:0;
  z-index:9000;
  background-color:#26262c;
  display:none;
}  
#boxes .window {
  position:absolute;
  left:0;
  top:0;
  width:440px;
  height:850px;
  display:none;
  z-index:9999;
  padding:20px;
  border-radius: 5px;
  text-align: center;
}
#boxes #dialog {
  width:450px; 
  height:auto;
  padding: 10px 10px 10px 10px;
  background-color:#ffffff;
  font-size: 15pt;
}

.agree:hover{
  background-color: #D1D1D1;
}
.popupoption:hover{
	background-color:#D1D1D1;
	color: green;
}
.popupoption2:hover{
	color: red;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>


                <div class="maintext">
<h2> Main text goes here...</h2>
</div>
<div id="boxes">
                    <div id="dialog" class="window">
                        <div id="san">
                            <section>
                                <select class="cs-select cs-skin-elastic">
                                    <option value="" disabled selected>Select a Country</option>
                                    <option value="france" data-class="flag-france">France</option>
                                    <option value="brazil" data-class="flag-brazil">Brazil</option>
                                    <option value="argentina" data-class="flag-argentina">Argentina</option>
                                    <option value="south-africa" data-class="flag-safrica">South Africa</option>
                                    <option value="france" data-class="flag-france">France</option>
                                    <option value="brazil" data-class="flag-brazil">Brazil</option>
                                    <option value="argentina" data-class="flag-argentina">Argentina</option>
                                    <option value="south-africa" data-class="flag-safrica">South Africa</option>
                                </select>
                            </section>
                        </div>
                    </div>
                    <div style="width: 2478px; font-size: 32pt; color: white; height: 1202px; display: none; opacity: 0.4;" id="mask"></div>
                </div>

Answer 3

检查以下代码段，当用户选择国家/地区时，您可以还原height dialog。

我根据您的要求删除了以下代码

$('#mask').click(function () {
    $(this).hide();
    $('.window').hide();
});

$(document).ready(function() {	

		var id = '#dialog';
	
		//Get the screen height and width
		var maskHeight = $(document).height();
		var maskWidth = $(window).width();
	
		//Set heigth and width to mask to fill up the whole screen
		$('#mask').css({'width':maskWidth,'height':maskHeight});
		
		//transition effect		
		$('#mask').fadeIn(500);	
		$('#mask').fadeTo("slow",0.9);	
	
		//Get the window height and width
		var winH = $(window).height();
		var winW = $(window).width();
              
		//Set the popup window to center
		$(id).css('top',  winH/2-$(id).height()/2);
		$(id).css('left', winW/2-$(id).width()/2);
	
		//transition effect
		$(id).fadeIn(2000); 	
	
	//if close button is clicked
	$('.window .close').click(function (e) {
		//Cancel the link behavior
		e.preventDefault();
		
		$('#mask').hide();
		$('.window').hide();
	});		
	
	//if mask is clicked
	/*$('#mask').click(function () {
		$(this).hide();
		$('.window').hide();
	});*/		
  
  $("select.cs-select").on('click', function(){
  	$("#dialog").height($('select.cs-select option').length*22)
  })
  
	
});

#mask {
  position:absolute;
  left:0;
  top:0;
  z-index:9000;
  background-color:#26262c;
  display:none;
}  
#boxes .window {
  position:absolute;
  left:0;
  top:0;
  width:440px;
  height:850px;
  display:none;
  z-index:9999;
  padding:20px;
  border-radius: 5px;
  text-align: center;
}
#boxes #dialog {
  width:450px; 
  height:auto;
  padding: 10px 10px 10px 10px;
  background-color:#ffffff;
  font-size: 15pt;
}

.agree:hover{
  background-color: #D1D1D1;
}
.popupoption:hover{
	background-color:#D1D1D1;
	color: green;
}
.popupoption2:hover{
	color: red;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="maintext">
<h2> Main text goes here...</h2>
</div>
<div id="boxes">
                    <div id="dialog" class="window">
                        <div id="san">
                            <section>
                                <select class="cs-select cs-skin-elastic">
                                    <option value="" disabled selected>Select a Country</option>
                                    <option value="france" data-class="flag-france">France</option>
                                    <option value="brazil" data-class="flag-brazil">Brazil</option>
                                    <option value="argentina" data-class="flag-argentina">Argentina</option>
                                    <option value="south-africa" data-class="flag-safrica">South Africa</option>
                                </select>
                            </section>
                        </div>
                    </div>
                    <div style="width: 2478px; font-size: 32pt; color: white; height: 1202px; display: none; opacity: 0.4;" id="mask"></div>
                </div>