本文介绍了使用jQuery的多个复选框过滤的处理方法，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
代码的目的是使用复选框进行过滤。在中，您可以看到有5个过滤器组及复选框。
目标是：当有人勾选多个复选框时，无论选中的复选框是在一个过滤器组中还是在不同的组中，都应该将结果列表缩小。例如，如果您在过滤器1组中选中两个框（例如Check1和Check2），它只应显示Check1和Check2中的结果，在这种情况下仅为Result1。 （目前代码扩展结果，如果选中这两个复选框，它将显示Result1，Result2，Result3和Result9）。
（如果在不同的过滤器组中选中复选框， / p>
另一个目标是，有5个过滤器组，但只有前3个组在编码。如何在代码中包含过滤器4和过滤器5组？
感谢您的帮助。
代码：
$ b b
< style media =screentype =text / css>
body {font-family：'Arial';颜色：＃646464; }
.filtering-wrap {float：left; width：20％; margin：0 5％0 0; padding：0; position：relative;}
< / style>
< script type =text / javascriptsrc =/ javascript / jquery-1.11.1.min.js>< / script>
< script>
$（document）.ready（function（）{
var byFilter1 = []，byFilter2 = []，byFilter3 = []，byFilter4 = []，byFilter5 = [];
$（input [name = fl-1]）。on（change，function（）{
if（this.checked）byFilter1.push 〜= +（this）.attr（value）+']）;
else removeA（byFilter1， value）+']）;
}）;
$（input [name = fl-2] b $ b if（this.checked）byFilter2.push（[data-category〜='+ $（this）.attr（value）+']）;
else removeA（byFilter2， [data-category〜='+ $（this）.attr（value）+']）;
}）;
$（input [name = （change-value），这个函数可以通过下面的函数来完成。 ）+']）;
else removeA（byFilter3，[data-category〜='+ $（this）.attr（value）+']）;
（change，function（）{
if（this.checked）byFilter4.push（function））;
$ [data-category〜='+ $（this）.attr（value）+']）;
else removeA（byFilter4，[data-category〜='+ $（this）.attr（value）+']）;
}）;
$（input [name = fl-5]）。on（change，function（）{
if（this.checked）byFilter5.push类别〜='+ $（this）.attr（value）+']）;
else removeA（byFilter5，[data-category〜='+ $（this）.attr value）+']）;
}）;
$（input）。on（change，function（）{
var str =Include items \\\
;
var selector = cselector =''，nselector ='';
var $ lis = $（'。results> div'），
$ checked = $（'input：checked'）;
if（$ checked.length）{
if（byFilter1.length）{
if（str ==Include items \\\
）{
str + =+with（+ byFilter1.join（'，'）+）\\\
;
$（$（'input [name = fl-1]：checked' ）.each（function（index，byFilter1）{
if（selector ===''）{
selector + =[data-category〜='+ byFilter1.id +'] ;
} else {
selector + =，[data-category〜='+ byFilter1.id +'];
}
}）;
} else {
str + =AND+with（+ byFilter1.join（'OR'）+）\\\
;
$（$（'input [name = fl-2]：checked'））每个（function（index，byFilter1）{
selector + =[data-category〜='+ byFilter1 .id +'];
}）;
}
}
if（byFilter2.length）{
if（str ==Include items \\\
）{
str + = +with（+ byFilter2.join（'OR'）+）\\\
;
$（$（'input [name = fl-2]：checked'））每个（function（index，byFilter2）{
if（selector ===''）{
selector + =[data-category〜='+ byFilter2.id +'];
} else {
selector + =，[data-category〜='+ byFilter2.id +'];
}
}）;
} else {
str + =AND+with（+ byFilter2.join（'OR'）+）\\\
;
$（$（'input [name = fl-2]：checked'））每个（function（index，byFilter2）{
if（cselector ===''）{
cselector + =[data-category〜='+ byFilter2.id +'];
} else {
cselector + =，[data-category〜='+ byFilter2.id +'];
}
}）;
}
}
if（byFilter3.length）{
if（str ==Include items \\\
）{
str + = +with（+ byFilter3.join（'OR'）+）\\\
;
$（$（'input [name = fl-3]：checked'））每个（function（index，byFilter3）{
if（selector ===''）{
selector + =[data-category〜='+ byFilter3.id +'];
} else {
selector + =，[data-category〜='+ byFilter3.id +'];
}
}）;
} else {
str + =AND+with（+ byFilter3.join（'OR'）+）\\\
;
$（$（'input [name = fl-3]：checked'））每个（function（index，byFilter3）{
if（nselector ===''）{
nselector + =[data-category〜='+ byFilter3.id +'];
} else {
nselector + =，[data-category〜='+ byFilter3.id +'];
}
}）;
}
}
$ lis.hide（）;
console.log（selector）;
console.log（cselector）;
console.log（nselector）;
if（cselector ===''& nselector ===''）{
$（'。results> div'）。 ）;
} else if（cselector ===''）{
$（'。results> div'）。filter（selector）.filter（nselector）.show（）;
} else if（nselector ===''）{
$（'。results> div'）。filter（selector）.filter（cselector）.show（）;
} else {
$（'。results> div'）。filter（selector）.filter（cselector）.filter（nselector）.show（）;
}
} else {
$ lis.show（）;
}
$（＃result）。html（str）;
}）;
function removeA（arr）{
var what，a = arguments，L = a.length，ax;
while（L> 1& arr.length）{
what = a [ - L];
while（（ax = arr.indexOf（what））！== -1）{
arr.splice（ax，1）;
}
}
return arr;
}
}）
< / script>
< div class =filtering-wrap>
< p style =font-size：12px;>< strong>过滤器1< / strong>< / p&
< form>
< label style =font-size：12px;>< input type =checkboxname =fl-1value =check1id =check1/> Check1< / label>< br>
< label style =font-size：12px;>< input type =checkboxname =fl-1value =check2id =check2/> Check2< / label>< br>
< label style =font-size：12px;>< input type =checkboxname =fl-1value =check3id =check3/> Check3< / label>< br>
< / form>
< p style =font-size：12px;>< strong>过滤器2< / strong>< / p&
< form>
< label style =font-size：12px;>< input type =checkboxname =fl-2value =check4id =check4/> Check4< / label>< br>
< label style =font-size：12px;>< input type =checkboxname =fl-2value =check5id =check5/> Check5< / label>< br>
< label style =font-size：12px;>< input type =checkboxname =fl-2value =check6id =check6/>检查6< / label>< br>
< label style =font-size：12px;>< input type =checkboxname =fl-2value =check7id =check7/> Check7< / label>< br>
< label style =font-size：12px;>< input type =checkboxname =fl-2value =check8id =check8/> Check8< / label>< br>
< label style =font-size：12px;>< input type =checkboxname =fl-2value =check9id =check9/> Check9< / label>
< / form>
< p style =font-size：12px;>< strong>过滤器3< / strong>< / p&
< form>
< label style =font-size：12px;>< input type =checkboxname =fl-3value =check10id =check10/> Check10< / label>< br>
< label style =font-size：12px;>< input type =checkboxname =fl-3value =check11id =check11/> Check11< / label>< br>
< label style =font-size：12px;>< input type =checkboxname =fl-3value =check12id =check12/> Check12< / label>
< / form>
< p style =font-size：12px;>< strong>过滤器4< / strong>< / p&
< form>
< label style =font-size：12px;>< input type =checkboxname =fl-4value =check13id =check13/> Check13< / label>< br>
< label style =font-size：12px;>< input type =checkboxname =fl-4value =check14id =check14/> Check14< / label>< br>
< label style =font-size：12px;>< input type =checkboxname =fl-4value =check15id =check15/> Check15< / label>< br>
< label style =font-size：12px;>< input type =checkboxname =fl-4value =check16id =check16/> Check16< / label>< br>
< label style =font-size：12px;>< input type =checkboxname =fl-4value =check17id =check17/> Check17< / label>
< / form>
< p style =font-size：12px;>< strong>过滤器5< / strong>< / p&
< form>
< label style =font-size：12px;>< input type =checkboxname =fl-5value =check18id =check18/> Check 18< / label>< br>
< label style =font-size：12px;>< input type =checkboxname =fl-5value =check19id =check19/> Check19< / label>< br>
< label style =font-size：12px;>< input type =checkboxname =fl-5value =check20id =check20/> Check20< / label>
< / div>
< div class =results>
< div class =resultdata-id =result1data-category =check1 check2 check3 check4 check5 check6 check7 check8 check9 check10> Result1< / div>
< div class =resultdata-id =result2data-category =check1 check3 check5 check7 check9 check11 check13 check15 check17 check19> Result2< / div>
< div class =resultdata-id =result3data-category =check2 check4 check6 check8 check10 check12 check14 check16 check18 check20> Result3< / div>
< div class =resultdata-id =result4data-category =check5 check6 check7 check8 check9 check10> Result4< / div>
< div class =resultdata-id =result5data-category =check15> Result5< / div>
< div class =resultdata-id =result6data-category =check3 check13 check20> Result6< / div>
< div class =resultdata-id =result7data-category =check11 check12 check13 check14 check15 check16> Result7< / div>
< div class =resultdata-id =result8data-category =check4 check8 check12 check16 check20> Result8< / div>
< div class =resultdata-id =result9data-category =check2 check3 check5 check7 check11 check13 check17 check19> Result9< / div>
< div class =resultdata-id =result10data-category =check3 check6 check9 check12 check15 check18> Result10< / div>
< div class =resultdata-id =result11data-category =check5 check10 check15 check20> Result11< / div>
< div class =resultdata-id =result12data-category =check6 check12 check18> Result12< / div>
< div class =resultdata-id =result13data-category =check7 check14> Result13< / div>
< div class =resultdata-id =result14data-category =check8 check16> Result14< / div>
解决方案
您可以执行所有组并使用更简单的过程通过使用 filter（）并创建一个更简单的数据数组来进行比较。
var $ results = $（'。result'），
$ checks = $（'：checkbox [name ^ = fl]'）;
$ checks.change（function（）{
var $ checked = $ checks.filter（'：checked'）;
/ *未检查时显示所有* /
if（！$ checked.length）{
$ results.show（）;
return; / *如果没有检查则退出此处* /
}
/ * create检查值数组* /
var checkedVals = $ .map（$ checked，function（el）{
return el.value
}）;
/ *隐藏所有结果，然后过滤匹配* /
$ results.hide（）。filter（function（）{
/ *将这个结果分成一个数组* /
var cats = $（this） .data（'category'）。split（''）;
/ *过滤checkedVals数组只有匹配的值* /
var checkMatches = $。grep（checkedVals，function（val）{
return $ .inArray（val，cats）> -1;
}）;
/ *只返回具有匹配数组和原始数组相同长度的元素* /
return checkMatches .length === checkedVals.length;
/ *显示匹配所有复选框的结果* /
}）show（）;
/ *当没有任何匹配时做某事* /
if（！$ results.length）{
alert（'Ooops ... no matches'）;
}
}）;
The aim of the code is to use checkboxes for filtering. In the JSFiddle example you can see that there are 5 filter groups with checkboxes.
The goal is: when somebody ticks multiple checkboxes, it should narrow the results list down, no matter if the checked checkboxes are in one filter group or in different groups. For example if you check two boxes in the Filter 1 group (e.g. Check1 and Check2) it should only display those results which are in Check1 AND Check2, which in this case is Result1 only. (Currently the code expands the results and if you check these 2 checkboxes it shows Result1, Result2, Result3 and Result9.)(The narrowing works if you check checkboxes in different Filter groups and it should remain this way.)
Another goal is that, there are 5 Filter groups, but only the first 3 groups are coded in yet. How can I include the Filter 4 and Filter 5 groups in the code?
Thank you for your help.
The code:
<style media="screen" type="text/css">
body { font-family:'Arial'; color:#646464; }
.filtering-wrap { float:left; width:20%; margin:0 5% 0 0; padding:0; position:relative;}
</style>
<script type="text/javascript" src="/javascript/jquery-1.11.1.min.js"></script>
<script>
$(document).ready(function() {
var byFilter1 = [], byFilter2 = [], byFilter3 = [], byFilter4 = [], byFilter5 = [];
$("input[name=fl-1]").on( "change", function() {
if (this.checked) byFilter1.push("[data-category~='" + $(this).attr("value") + "']");
else removeA(byFilter1, "[data-category~='" + $(this).attr("value") + "']");
});
$("input[name=fl-2]").on( "change", function() {
if (this.checked) byFilter2.push("[data-category~='" + $(this).attr("value") + "']");
else removeA(byFilter2, "[data-category~='" + $(this).attr("value") + "']");
});
$("input[name=fl-3]").on( "change", function() {
if (this.checked) byFilter3.push("[data-category~='" + $(this).attr("value") + "']");
else removeA(byFilter3, "[data-category~='" + $(this).attr("value") + "']");
});
$("input[name=fl-4]").on( "change", function() {
if (this.checked) byFilter4.push("[data-category~='" + $(this).attr("value") + "']");
else removeA(byFilter4, "[data-category~='" + $(this).attr("value") + "']");
});
$("input[name=fl-5]").on( "change", function() {
if (this.checked) byFilter5.push("[data-category~='" + $(this).attr("value") + "']");
else removeA(byFilter5, "[data-category~='" + $(this).attr("value") + "']");
});
$("input").on( "change", function() {
var str = "Include items \n";
var selector = '', cselector = '', nselector = '';
var $lis = $('.results > div'),
$checked = $('input:checked');
if ($checked.length) {
if (byFilter1.length) {
if (str == "Include items \n") {
str += " " + "with (" + byFilter1.join(',') + ")\n";
$($('input[name=fl-1]:checked')).each(function(index, byFilter1){
if(selector === '') {
selector += "[data-category~='" + byFilter1.id + "']";
} else {
selector += ",[data-category~='" + byFilter1.id + "']";
}
});
} else {
str += " AND " + "with (" + byFilter1.join(' OR ') + ")\n";
$($('input[name=fl-2]:checked')).each(function(index, byFilter1){
selector += "[data-category~='" + byFilter1.id + "']";
});
}
}
if (byFilter2.length) {
if (str == "Include items \n") {
str += " " + "with (" + byFilter2.join(' OR ') + ")\n";
$($('input[name=fl-2]:checked')).each(function(index, byFilter2){
if(selector === '') {
selector += "[data-category~='" + byFilter2.id + "']";
} else {
selector += ",[data-category~='" + byFilter2.id + "']";
}
});
} else {
str += " AND " + "with (" + byFilter2.join(' OR ') + ")\n";
$($('input[name=fl-2]:checked')).each(function(index, byFilter2){
if(cselector === '') {
cselector += "[data-category~='" + byFilter2.id + "']";
} else {
cselector += ",[data-category~='" + byFilter2.id + "']";
}
});
}
}
if (byFilter3.length) {
if (str == "Include items \n") {
str += " " + "with (" + byFilter3.join(' OR ') + ")\n";
$($('input[name=fl-3]:checked')).each(function(index, byFilter3){
if(selector === '') {
selector += "[data-category~='" + byFilter3.id + "']";
} else {
selector += ",[data-category~='" + byFilter3.id + "']";
}
});
} else {
str += " AND " + "with (" + byFilter3.join(' OR ') + ")\n";
$($('input[name=fl-3]:checked')).each(function(index, byFilter3){
if(nselector === '') {
nselector += "[data-category~='" + byFilter3.id + "']";
} else {
nselector += ",[data-category~='" + byFilter3.id + "']";
}
});
}
}
$lis.hide();
console.log(selector);
console.log(cselector);
console.log(nselector);
if (cselector === '' && nselector === '') {
$('.results > div').filter(selector).show();
} else if (cselector === '') {
$('.results > div').filter(selector).filter(nselector).show();
} else if (nselector === '') {
$('.results > div').filter(selector).filter(cselector).show();
} else {
$('.results > div').filter(selector).filter(cselector).filter(nselector).show();
}
} else {
$lis.show();
}
$("#result").html(str);
});
function removeA(arr) {
var what, a = arguments, L = a.length, ax;
while (L > 1 && arr.length) {
what = a[--L];
while ((ax= arr.indexOf(what)) !== -1) {
arr.splice(ax, 1);
}
}
return arr;
}
});
</script>
<div class="filtering-wrap">
<p style="font-size:12px;"><strong>Filter 1</strong></p>
<form>
<label style="font-size:12px;"><input type="checkbox" name="fl-1" value="check1" id="check1" /> Check1</label><br>
<label style="font-size:12px;"><input type="checkbox" name="fl-1" value="check2" id="check2" /> Check2</label><br>
<label style="font-size:12px;"><input type="checkbox" name="fl-1" value="check3" id="check3" /> Check3</label><br>
</form>
<p style="font-size:12px;"><strong>Filter 2</strong></p>
<form>
<label style="font-size:12px;"><input type="checkbox" name="fl-2" value="check4" id="check4" /> Check4</label><br>
<label style="font-size:12px;"><input type="checkbox" name="fl-2" value="check5" id="check5" /> Check5</label><br>
<label style="font-size:12px;"><input type="checkbox" name="fl-2" value="check6" id="check6" /> Check6</label><br>
<label style="font-size:12px;"><input type="checkbox" name="fl-2" value="check7" id="check7" /> Check7</label><br>
<label style="font-size:12px;"><input type="checkbox" name="fl-2" value="check8" id="check8" /> Check8</label><br>
<label style="font-size:12px;"><input type="checkbox" name="fl-2" value="check9" id="check9" /> Check9</label>
</form>
<p style="font-size:12px;"><strong>Filter 3</strong></p>
<form>
<label style="font-size:12px;"><input type="checkbox" name="fl-3" value="check10" id="check10" /> Check10</label><br>
<label style="font-size:12px;"><input type="checkbox" name="fl-3" value="check11" id="check11" /> Check11</label><br>
<label style="font-size:12px;"><input type="checkbox" name="fl-3" value="check12" id="check12" /> Check12</label>
</form>
<p style="font-size:12px;"><strong>Filter 4</strong></p>
<form>
<label style="font-size:12px;"><input type="checkbox" name="fl-4" value="check13" id="check13" /> Check13</label><br>
<label style="font-size:12px;"><input type="checkbox" name="fl-4" value="check14" id="check14" /> Check14</label><br>
<label style="font-size:12px;"><input type="checkbox" name="fl-4" value="check15" id="check15" /> Check15</label><br>
<label style="font-size:12px;"><input type="checkbox" name="fl-4" value="check16" id="check16" /> Check16</label><br>
<label style="font-size:12px;"><input type="checkbox" name="fl-4" value="check17" id="check17" /> Check17</label>
</form>
<p style="font-size:12px;"><strong>Filter 5</strong></p>
<form>
<label style="font-size:12px;"><input type="checkbox" name="fl-5" value="check18" id="check18" /> Check18</label><br>
<label style="font-size:12px;"><input type="checkbox" name="fl-5" value="check19" id="check19" /> Check19</label><br>
<label style="font-size:12px;"><input type="checkbox" name="fl-5" value="check20" id="check20" /> Check20</label>
</div>
<div class="results">
<div class="result" data-id="result1" data-category="check1 check2 check3 check4 check5 check6 check7 check8 check9 check10">Result1</div>
<div class="result" data-id="result2" data-category="check1 check3 check5 check7 check9 check11 check13 check15 check17 check19">Result2</div>
<div class="result" data-id="result3" data-category="check2 check4 check6 check8 check10 check12 check14 check16 check18 check20">Result3</div>
<div class="result" data-id="result4" data-category="check5 check6 check7 check8 check9 check10">Result4</div>
<div class="result" data-id="result5" data-category="check15">Result5</div>
<div class="result" data-id="result6" data-category="check3 check13 check20">Result6</div>
<div class="result" data-id="result7" data-category="check11 check12 check13 check14 check15 check16">Result7</div>
<div class="result" data-id="result8" data-category="check4 check8 check12 check16 check20">Result8</div>
<div class="result" data-id="result9" data-category="check2 check3 check5 check7 check11 check13 check17 check19">Result9</div>
<div class="result" data-id="result10" data-category="check3 check6 check9 check12 check15 check18">Result10</div>
<div class="result" data-id="result11" data-category="check5 check10 check15 check20">Result11</div>
<div class="result" data-id="result12" data-category="check6 check12 check18">Result12</div>
<div class="result" data-id="result13" data-category="check7 check14">Result13</div>
<div class="result" data-id="result14" data-category="check8 check16">Result14</div>
解决方案
You can do all groups and use a simpler process to do it by using filter() and creating a simpler set of data arrays for comparisons.
var $results=$('.result'),
$checks=$(':checkbox[name^=fl]');
$checks.change(function(){
var $checked=$checks.filter(':checked');
/* show all when nothing checked*/
if(!$checked.length){
$results.show();
return; /* quit here if nothing checked */
}
/* create array of checked values */
var checkedVals= $.map($checked, function(el){
return el.value
});
/* hide all results, then filter for matches */
$results.hide().filter(function(){
/* split categories for this result into an array*/
var cats=$(this).data('category').split(' ');
/* filter the checkedVals array to only values that match */
var checkMatches=$.grep(checkedVals, function(val){
return $.inArray(val, cats) >-1;
});
/* only return elements with matched array and original array being same length */
return checkMatches.length === checkedVals.length;
/* show results that match all the checked checkboxes */
}).show();
/* do something when there aren't any matches */
if(!$results.length){
alert('Ooops...no matches');
}
});
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