使用jquery从数组中过滤数据值

Question

这是我的完整代码。

1. 我想将值存储在一个数组中，就像提到的那样：dataArray = ["size", "color", "material"];
2. 每个“form-row” div 包含来自“dataArray”- 数组的数据值，例如“size”、“color”、“material”；
3. 当我点击“创建订单”按钮时，在这种情况下它将创建一个名为“颜色”的数据值，因为已经有两个 div 包含“尺寸”和“材质”字段；每次单击按钮都会一次创建一次结构；
4. 我还有“/--remove div--/”部分中提到的“删除”功能；
5. 但是过滤/找到正确的东西存在问题； “srch()”函数有问题；请帮帮我；

//global variables
var dataArray = ["size", "color", "material"];
var dataArrayCreated = [];

var glb_array_len = dataArray.length;
var tot_len = $("#form-row_cst").find(".form-row").length;

/*--create_element--*/
function create_elment() {
  var html_structure = "<div class='form-row' data-value="+ dataArrayCreated[0] +"><div class='form-group col-md-3 col-sm-12'><label class='ad_prd_lbl'>Option name</label><input type='text' class='form-control' placeholder='"+ dataArrayCreated[0] +"' value='"+ dataArrayCreated[0] +"' id="+ dataArrayCreated[0]+'_val' +"></div><div class='form-group col-md-8 col-sm-12'><label class='ad_prd_lbl'>Option values</label><input type='text' id="+ dataArrayCreated[0]+'_inp' +" class='form-control' placeholder='Separate options with a comma'></div><div class='form-group col-md-1 col-sm-12'><button class='but_all btn_rmv' type='button'><svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'><path d='M16 6a1 1 0 1 1 0 2h-1v9a1 1 0 0 1-1 1H6a1 1 0 0 1-1-1V8H4a1 1 0 1 1 0-2h12zM9 4a1 1 0 1 1 0-2h2a1 1 0 1 1 0 2H9zm2 12h2V8h-2v8zm-4 0h2V8H7v8z'></path></svg></button></div></div>";

  $("#form-row_cst").append(html_structure).appendTo("#form-row_cst");
}

//search function
function srch() {
  $.each(dataArray, function (index, value) {
    console.log(value);
    $("#form-row_cst").find(".form-row").each(function () {
      console.log($(this).attr('data-value'));
      if( $(this).attr('data-value') !== value ) {
        dataArrayCreated[0] = value;
        console.log("found - "+dataArrayCreated[0]);
      }
    });
  });
}

//main function
function main_fn() {
 if( tot_len <= glb_array_len ) {
   //console.log("count Data - "+ tot_len+"-items");
   srch();
   create_elment();
 }
 else {
   console.log("Invalid Data - "+ tot_len+"-items");
 }
}

/*---click btn to create structure--*/
$("#clone_btn").click(function(){
  //find created element from list
  main_fn();

  if( ($("#form-row_cst").find(".form-row").length) > (dataArray.length)-1 ) {
    $(this).hide();
  }
});

/*--remove div--*/
$(document).on("click","#form-row_cst .btn_rmv", function(){
  //check if this div is last child of "#form-row_cst"
  if( $("#form-row_cst").find(".form-row").length-1 < 1) {
    alert("sorry, you can't delete this items");
  }
  else {
    //remove div
    $(this).parents(".form-row").remove();
  }
  if( ($("#form-row_cst").find(".form-row").length) < (dataArray.length)+1 ) {
    $("#clone_btn").show();
  }
});

body {
  color: rgba(70, 90, 110, 0.85);
  font-size: 0.8rem;
  line-height: 1.6;
  font-weight: 400;
  background-color: #f3f6f9;
}

.box {
  border-radius: 3px;
  box-shadow: 0 0px 1px rgba(0, 0, 0, 0.15);
  background-color: #fff;
  position: relative;
  margin-bottom: 1.5rem;
}

.order_details {
  padding: 15px;
}

.dropdown_div {
  display: none;
}

.gry_of_bg {
  background-color: #f9fafb;
}

.form-row>.col, .form-row>[class*=col-] {
  padding-right: 5px;
  padding-left: 5px;
}

.form-result_outer {
  padding: 15px 0px 0px;
}

label {
  display: inline-block;
  margin-bottom: .5rem;
}

.ad_prd_lbl {
  font-size: .8rem;
  color: #212b35;
  margin-bottom: .25rem;
}

#form-row_cst .form-row .form-control,
#form-row_cst .but_all {
  min-height: 36px;
}

.input_tags_cnt {
  position: relative;
  width:100%;
}

#form-row_cst .input_tags_cnt .bootstrap-tagsinput {
  background-color: #fff;
  box-shadow: none;
  border-color: rgba(120, 130, 140, 0.2);
  min-height: auto;
}

.bootstrap-tagsinput {
  width: 100%;
  font-size: 0;
  display: inline-block;
  padding: 4px 6px;
  color: #555;
  vertical-align: middle;
  border-radius: 4px;
  max-width: 100%;
  line-height: 22px;
  cursor: text;
  border: 1px solid #ccc;
}

.bootstrap-tagsinput input {
  border: none;
  box-shadow: none;
  outline: none;
  background-color: transparent;
  padding: 0 6px;
  margin: 0;
  width: auto;
  max-width: inherit;
}

#form-row_cst .form-row input,
#form-row_cst .form-row .bootstrap-tagsinput input {
  color: #222;
  font-size: 0.8rem;
}
.input_tags_cnt .bootstrap-tagsinput>input {
  width: 100%;
}

.but_all {
  padding: 5px 12px;
  border-radius: 3px;
  background: #fff;
  border: 1px solid #c4cdd5;
  line-height: 100%;
  cursor: pointer;
  -webkit-transition: all .3s ease-out;
  transition: all .3s ease-out;
  min-height: 34px;
}
#form-row_cst .but_all {
  margin-top: 24px;
}
#form-row_cst .form-row .form-control,
#form-row_cst .but_all {
  min-height: 36px;
}
#form-row_cst .form-row .form-control {
  width: 100%;
}

.but_all svg {
  width: 20px;
  height: 20px;
  line-height: 100%;
}

.cbd_table_product_table {
  border: 0px;
  min-width: 650px;
}

.cbd_table_product_table > thead > tr > th,
.cbd_table_product_table > tbody > tr > td {
  border-left: 0px;
  border-right: 0px;
  border-top: 0px;
  border-bottom: 1px solid #ebeef0;
  vertical-align: top;
  font-size: 0.86rem;
}

.cbd_table_product_table > thead > tr > th {
  padding: .5rem .4rem;
  color: #212b35;
  font-weight: 500;
}
.cbd_table_product_table > thead > tr > th:first-child,
.cbd_table_product_table > tbody > tr > td:first-child {
  padding-left: 3px;
}

.custom-checkbox {
  margin: 0rem;
  vertical-align: middle;
  padding: 0px;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  cursor: pointer;
}
.custom-checkbox .custom-control-input {
  width: 1rem;
  height: 1rem;
  position: relative;
}
.custom-control-indicator {
  position: absolute;
  top: .25rem;
  left: 0;
  display: block;
  width: 1rem;
  height: 1rem;
  pointer-events: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  background-color: #ddd;
  background-repeat: no-repeat;
  background-position: center center;
  background-size: 50% 50%;
}
.custom-checkbox .custom-control-input:checked~.custom-control-indicator {
  background-color: #17a2b8;
}
.custom-checkbox .custom-control-input:checked~.custom-control-indicator {
  background-image: url(data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' v…M6.564.75l-3.59 3.612-1.538-1.55L0 4.26 2.974 7.25 8 2.193z'/%3E%3C/svg%3E);
}

.tb_Variant_tag {
  font-size: .8rem;
  position: relative;
  padding-right: 10px;
  text-transform: capitalize;
  line-height: 100%;
  display: inline-block;
  vertical-align: middle;
}
.color_tb_Variant {
  color: #29bc94;
}
.size_tb_Variant {
  color: #ff9517;
}
.meterial_tb_Variant {
  color: #763eaf;
}
.tb_Variant_tag:after {
  content: "";
  background-color: #637381;
  height: 4px;
  width: 4px;
  position: absolute;
  right: 2px;
  top: 4px;
  font-size: 0;
  border-radius: 50%;
  overflow: hidden;
}

<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0/css/bootstrap.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0/js/bootstrap.min.js"></script>


<div class="box">
      <div class="order_details">
        <header class="prd_hdr clearfix">
          <h6>Variants</h6>
        </header>
        <div class="form-group">
            <p>Add variants if this product comes in multiple versions, like different sizes or colors.</p>
        </div>
      </div>
      <div class="clearfix dropdown_div" style="display: block;">
          <div class="order_details gry_of_bg">
              <div class="clearfix" id="form-row_cst">
                  <div class="form-row" data-value="size">
                      <div class="form-group col-md-3 col-sm-12">
                          <label class="ad_prd_lbl">Option name</label>
                          <input type="text" class="form-control" id="size_val" placeholder="Size" value="size">
                      </div>
                      <div class="form-group col-md-8 col-sm-12">
                          <label class="ad_prd_lbl">Option values</label>
                          <input type="text" id="size_inp" class="form-control" placeholder="Separate options with a comma">
                      </div>
                      <div class="form-group col-md-1 col-sm-12">
                          <button class="but_all btn_rmv" type="button">
                              <svg id="delete-minor" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20">
                                  <path d="M16 6a1 1 0 1 1 0 2h-1v9a1 1 0 0 1-1 1H6a1 1 0 0 1-1-1V8H4a1 1 0 1 1 0-2h12zM9 4a1 1 0 1 1 0-2h2a1 1 0 1 1 0 2H9zm2 12h2V8h-2v8zm-4 0h2V8H7v8z"></path>
                              </svg>
                          </button>
                      </div>
                  </div>
                  <div class="form-row" data-value="material">
                      <div class="form-group col-md-3 col-sm-12">
                          <label class="ad_prd_lbl">Option name</label>
                          <input type="text" class="form-control" id="material_val" placeholder="material" value="material">
                      </div>
                      <div class="form-group col-md-8 col-sm-12">
                          <label class="ad_prd_lbl">Option values</label>
                          <input type="text" id="material_inp" class="form-control" placeholder="Separate options with a comma">
                      </div>
                      <div class="form-group col-md-1 col-sm-12">
                          <button class="but_all btn_rmv" type="button">
                              <svg id="delete-minor" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20">
                                  <path d="M16 6a1 1 0 1 1 0 2h-1v9a1 1 0 0 1-1 1H6a1 1 0 0 1-1-1V8H4a1 1 0 1 1 0-2h12zM9 4a1 1 0 1 1 0-2h2a1 1 0 1 1 0 2H9zm2 12h2V8h-2v8zm-4 0h2V8H7v8z"></path>
                              </svg>
                          </button>
                      </div>
                  </div>

              </div>
              <div class="form-row">
                  <div class="form-group col-sm-12">
                      <button class="but_all" type="button" id="clone_btn">Create order</button>
                  </div>
              </div>
          </div>
      </div>
    </div>

Answer 1

一旦你知道如何利用函数接受参数和返回值的能力，你会发现这种事情（和一般编程）更简单、更令人满意。

根据您的需要：

• srch() 查找 dataArray 中当前没有相应表单行的每个项目。
• main_fn() 调用 srch() 然后创建任何缺失的行。

先写srch()，返回dataArray的过滤副本，如下：

function srch() {
    // Return a filtered copy of `dataArray` leaving items for which there is currently no corresponding form-row.
    return dataArray.filter(function(item) {
        return $("#form-row_cst .form-row").filter(function() {
            return $(this).data('value') === item;
        }).length === 0;
    });
}

然后写main_fn()循环遍历srch()调用create_elment()返回的数组，如下：

function main_fn() {
    if( tot_len <= glb_array_len ) {
        console.log("count Data - " + tot_len + "-items");
        srch().forEach(create_elment);
    } else {
        console.log("Invalid Data - " + tot_len + "-items");
    }
}

为此，create_elment() 需要接受一个参数，如下所示：

function create_elment(item) {
    $("<div class='form-row' data-value=" + item + "><div class='form-group col-md-3 col-sm-12'><label class='ad_prd_lbl'>Option name</label><input type='text' class='form-control' placeholder='" + item + "' value='" + item + "' id=" + item + '_val' + "></div><div class='form-group col-md-8 col-sm-12'><label class='ad_prd_lbl'>Option values</label><input type='text' id=" + item + '_inp' +" class='form-control' placeholder='Separate options with a comma'></div><div class='form-group col-md-1 col-sm-12'><button class='but_all btn_rmv' type='button'><svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'><path d='M16 6a1 1 0 1 1 0 2h-1v9a1 1 0 0 1-1 1H6a1 1 0 0 1-1-1V8H4a1 1 0 1 1 0-2h12zM9 4a1 1 0 1 1 0-2h2a1 1 0 1 1 0 2H9zm2 12h2V8h-2v8zm-4 0h2V8H7v8z'></path></svg></button></div></div>").appendTo("#form-row_cst");
}

外部的 var dataArrayCreated 可以省略。

编辑

要每次点击#clone_btn 只添加一行，您可以保留srch() 原样（我的版本）并在main_fn() 中更改行...

srch().forEach(create_elment);

到...

srch().slice(0, 1).forEach(create_elment);

这样，srch() 仍会返回一个表示所有缺失行的项目数组，而 main_fn() 可以控制它将对其中的哪些行进行操作。

如果srch() 返回空数组，那么srch().slice(0, 1) 也将是空数组并且不会调用create_elment。除非您特别想在日志中看到这些消息，否则if(tot_len <= glb_array_len) 测试可能不再需要？