使用复选框进行多条件筛选-前端问题

Multi condition filtering with checkboxes JavaScript(使用复选框进行多条件筛选)

本文介绍了使用复选框进行多条件筛选的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在尝试创建一个由复选框触发的筛选器，用于显示和隐藏列表中的选项。我已尝试使用在线资源将脚本组合在一起，但似乎都不起作用。

为了隐藏或显示列表项
我正在编辑a-class="mark"父元素
基于其子元素的wether-class="condtx"
是否与复选框数组匹配"Value"。

我已添加了有关我的进展情况的评论。

请谁给我指个方向好吗？

数据-lang="js"数据-隐藏="假"数据-控制台="真"数据-巴贝尔="假">

function filterCondtn1() {
  var i, z;

  //"chekedVal" array Keeps returning "undefined" I have no idea why

  var chekedVal = document.getElementById("InputOpts").getElementsByTagName("input").checked.value;

  //Gathered all <h3> tag options into array to be tested against "chekedVal" for match

  var condt1 = document.getElementsByClassName("condtn1").innerHTML;

  //Parrent class that will be edited to show <div> or not if True or false.

  var parrentClss = document.getElementsByClassName("marker");

  //From here it's a blur. I've trying everything I can. I think I should be something of that sort.

  for {
    (var i = 0; i < condt1.length; i++) &&
    (var z = 0; z < parrentClss.length; z++)
    RemoveClass(parrentClss[z], "show");
    if (condt1[i].indexOf(chekedVal) > -1) AddClass(parrentClss[z], "show");
  }
}

//Currently using these two functions in my script and they work

function RemoveClass(element, name) {
  var i, arr1, arr2;
  arr1 = element.className.split(" ");
  arr2 = name.split(" ");
  for (i = 0; i < arr2.length; i++) {
    while (arr1.indexOf(arr2[i]) > -1) {
      arr1.splice(arr1.indexOf(arr2[i]), 1);
    }
  }
  element.className = arr1.join(" ");
}

function AddClass(element, name) {
  var i, arr1, arr2;
  arr1 = element.className.split(" ");
  arr2 = name.split(" ");
  for (i = 0; i < arr2.length; i++) {
    if (arr1.indexOf(arr2[i]) == -1) {
      element.className += " " + arr2[i];
    }
  }
}

.markerA {
  display: none;
}

.show {
  display: block;
}

<div id="InputOpts">
  <input type="checkbox" value="option 1" oninput="filterCondtn1();">Option 1
  <input type="checkbox" value="option 2" oninput="filterCondtn1();">Option 2
  <input type="checkbox" value="option 3" oninput="filterCondtn1();">Option 3
  <input type="checkbox" value="option 4" oninput="filterCondtn1();">Option 4
</div>

<div class="marker">
  <div class="necessary">
    <h3 class="condtn1">Option 1</h3>
  </div>
</div>

<div class="marker">
  <div class="necessary">
    <h3 class="condtn2">Option 3</h3>
  </div>
</div>
<div class="marker">
  <div class="necessary">
    <h3 class="condtn1">Option 2</h3>
  </div>
</div>
<div class="marker">
  <div class="necessary">
    <h3 class="condtn2">Option 4</h3>
  </div>
</div>

推荐答案

利用您的onInput函数。这可以用比您拥有的代码少得多的代码来完成。您可以直接获取元素，而不需要遍历复选框和父元素。您还可以添加直接样式，而不必经历添加css类的废话。

我不能100%确定您想要什么，所以这里有两个例子。

如果要隐藏所选选项：

数据-lang="js"数据-隐藏="假"数据-控制台="真"数据-巴贝尔="假">

function filterCondtn1(event) {
  var element = event.target
  var condt1 = document.getElementsByClassName("option")
  for (var i = 0; i < condt1.length; i++) {
    if (condt1[i].innerHTML.toLowerCase() == element.value.toLowerCase()) {
      if (element.checked == true) {
        condt1[i].parentElement.style = "display:none"
      } else {
        condt1[i].parentElement.style = "display:block"
      }
    }
  }
}

<div id="InputOpts">
  <input type="checkbox" value="option 1" oninput="filterCondtn1(event);">Option 1
  <input type="checkbox" value="option 2" oninput="filterCondtn1(event);">Option 2
  <input type="checkbox" value="option 3" oninput="filterCondtn1(event);">Option 3
  <input type="checkbox" value="option 4" oninput="filterCondtn1(event);">Option 4
</div>

<div class="marker">
  <div class="necessary">
    <h3 class="option">Option 1</h3>
  </div>
</div>

<div class="marker">
  <div class="necessary">
    <h3 class="option">Option 3</h3>
  </div>
</div>
<div class="marker">
  <div class="necessary">
    <h3 class="option">Option 2</h3>
  </div>
</div>
<div class="marker">
  <div class="necessary">
    <h3 class="option">Option 4</h3>
  </div>
</div>

如果只想显示选定的选项：

数据-lang="js"数据-隐藏="假"数据-控制台="真"数据-巴贝尔="假">

function filterCondtn1(event) {
  var element = event.target
  var condt1 = document.getElementsByClassName("option")
  for (var i = 0; i < condt1.length; i++) {
    if (condt1[i].innerHTML.toLowerCase() == element.value.toLowerCase()) {
      if (element.checked == true) {
        condt1[i].parentElement.style = "display:block"
      } else {
        condt1[i].parentElement.style = "display:none"
      }
    }
  }
}

.marker > .necessary {
  display: none;
}

<div id="InputOpts">
  <input type="checkbox" value="option 1" oninput="filterCondtn1(event);">Option 1
  <input type="checkbox" value="option 2" oninput="filterCondtn1(event);">Option 2
  <input type="checkbox" value="option 3" oninput="filterCondtn1(event);">Option 3
  <input type="checkbox" value="option 4" oninput="filterCondtn1(event);">Option 4
</div>

<div class="marker">
  <div class="necessary">
    <h3 class="option">Option 1</h3>
  </div>
</div>

<div class="marker">
  <div class="necessary">
    <h3 class="option">Option 3</h3>
  </div>
</div>
<div class="marker">
  <div class="necessary">
    <h3 class="option">Option 2</h3>
  </div>
</div>
<div class="marker">
  <div class="necessary">
    <h3 class="option">Option 4</h3>
  </div>
</div>

这篇关于使用复选框进行多条件筛选的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！