我有一个包含select元素的表单,我想通过选择添加和删除其中的一些元素。这是html代码(这里也有jsfiddle http://jsfiddle.net/txhajy2w/):
<form id="Form" action="#" method="POST">
<div id="FormContainer">
<div class="Row" id="container_0">
<a id="delete_link_0">
<i class="glyphicon glyphicon-minus"></i>
</a>
<select class="type_name" name="type_name_0" id="type_name_0">
<option value="">Select an Option</option>
<optgroup label="All Options">
<option value="1">Option 1</option>
<option value="2">Option 2</option>
<option value="3">Option 3</option>
</optgroup>
</select>
<a id="new_link_0">
<i class="glyphicon glyphicon-plus"></i>
</a>
</div>
</div>
<div>
<input type="submit" name="submit" value="Submit">
</div>
</form>
我需要的是:
答案 0 :(得分:1)
好的是再次使用新ID添加select
元素并删除最后添加的select元素,您可以执行以下操作:
<强> DEMO 强>
$('#new_link_0').on('click',function(){
var select=$('.wrap').find('select:last').clone();
var id=$(select).attr('id').split('_')[2];
$(select).attr('id','type_name_'+parseInt(id+1));
$(select).attr('name','type_name_'+parseInt(id+1));
$(select).insertAfter('.wrap select:last');
});
$('#delete_link_0').on('click',function(){
$('.wrap').find('select:last').remove();
});
<强>更新强>
要每次添加新商品并将整套ids
重置为正确的数量,您可以按照以下方式执行,但您需要遵循以下html
结构:
<强> DEMO 强>
<强> HTML 强>
<form id="Form" action="#" method="POST">
<div id="FormContainer">
<div class="Row" id="container_0">
<div class="wrap">
<div class="element"> //wrap each cloning element inside a div
<a id="delete_link_0" href="#" class="minus">
<i class="glyphicon glyphicon-minus"></i>
</a>
<select class="type_name" name="type_name_0" id="type_name_0">
<option value="">Select an Option</option>
<optgroup label="All Options">
<option value="1">Option 1</option>
<option value="2">Option 2</option>
<option value="3">Option 3</option>
</optgroup>
</select>
<a id="new_link_0" href="#" class="plus">
<i class="glyphicon glyphicon-plus"></i>
</a>
</div>
</div>
</div>
</div>
<div>
<input type="submit" name="submit" value="Submit"/>
</div>
</form>
<强> JS 强>
$(document).on('click','.plus',function(){
var element=$('.wrap').find('.element:last').clone();//clone last element always
var id=parseInt($(element).find('select').attr('id').split('_')[2])+1;
$(element).find('select').attr('id','type_name_'+id);
$(element).find('.plus').attr('id','new_link_'+id);
$(element).find('.minus').attr('id','delete_link_'+id);
$(element).find('select').attr('name','type_name_'+id);
$(element).insertAfter('.wrap .element:last'); //insert at the end once modification to the cloned elements has been done
});
$(document).on('click','.minus',function(){
if($('.wrap .element').length===1) //check for the length if there is only one element then prevent it from deleting
{
alert('Cannot delete this! Atleast one item must be there');
return false;
}
$(this).parents('.element').remove();
$.each($('.element'),function(index,value){//find each .element and reset the `ids` of the controls inside it
$(this).find('.minus').attr('id','delete_link_'+index);
$(this).find('.plus').attr('id','new_link_'+index);
$(this).find('select').attr('id','type_name_'+index).attr('name','type_name_'+index);
});
});
注意:如果您在流程中执行此类操作,重置
ids
可能会产生实时问题