jQuery數據屬性條件選擇器

Question

我如何才能獲得所有屬性的“數據”值大於然后小於100小於500的DOM

<div id="bg1" data-50="background-position:0px 0px;" data-end="background-position:-500px -10000px;"></div>
<div id="bg2" data-200="background-position:0px 0px;" data-end="background-position:-500px -8000px;"></div>
<div id="bg3" data-300="background-position:0px 0px;" data-end="background-position:-500px -6000px;"></div>    
<div id="bg4" data-600="background-position:0px 0px;" data-end="background-position:-500px -10000px;"></div>
<div id="bg5" data-150="background-position:0px 0px;" data-end="background-position:-500px -8000px;"></div>
<div id="bg6" data-800="background-position:0px 0px;" data-end="background-position:-500px -6000px;"></div>

Answer 1

您正在濫用data-*屬性。 所有屬性選擇器均按其屬性值（而不是其屬性名）過濾元素。 此處沒有預定義的選擇器。 您可以遍歷attributes並以困難的方式進行操作：

$('div').filter(function() {
    var a = this.attributes, l = a.length, n;
    for (var i = 0; i < l; i++) {
       if ( a[i].name.match(/^data-[0-9]+$/) ) {
           n = + a[i].name.replace('data-', '');
           return n > 100 && n < 500;
       }
    }
    return false;    
});

http://jsfiddle.net/jonpom9m/

Answer 2

看下面的例子：

在以下示例中，我假設只有2個數據屬性，其中之一是“數據端”

$(function () {
    //we go through all of the dom elements:
    $("*").each(function () {
        //here we go through all of the attributes of the current element:
        $.each(this.attributes, function () {
            //if the attribute containts "data" in its name, and doesnt contain "end", then
            //its an attribute that we need. if you have more data attributes, you need
            //to filter them in the following condition as well:
            if (this.name.indexOf("data") > -1 && 
                this.name.indexOf("end")==-1) {
                //we extract the number from the data attribute:
                var lenght = this.name.length;
                var number_from_data=this.name.substring(5,lenght);
                var is_it_between_100_and_500;
                if(number_from_data>100 && number_from_data<500){
                    is_it_between_100_and_500=true;
                }
                else{
                    is_it_between_100_and_500=false;
                }
                console.log(this.name,is_it_between_100_and_500);
            }
        });
    });
});

例

Answer 3

這是一個雙重過濾，以檢索屬性data-[number]的元素，其元素的number > 100 and number < 500 。 不過，如果我們對您要嘗試做的事情了解更多，我懷疑可能會有更簡單的解決方案。

[ 編輯 ]添加了一個更簡單的方法，該方法使用元素outerHTML字符串進行過濾

 // FilterDivs: double filtering on attributes nodelist // FilterDivs2: filter using a match in the outerHTML-string // ---------------------------------------------------------- var filteredDivs = $('[data-end]').filter( function (i, el) { return [].slice.call(el.attributes).filter( function (v) { var key = v.nodeName ,isdatanum = /data\\-\\d/i.test(key) ,val = isdatanum && +key.split('-')[1] || 0; return val > 100 && val < 500; }).length }) ,filteredDivs2 = $('[data-end]').filter( function (i, el) { var number = +(el.outerHTML.match(/data-(\\d+)=/) || [0,0])[1]; return number > 100 && number < 500; }); //show result $('#result').html('filteredDivs: '+ filteredDivs.toArray() .map(function (v) {return '[div#'+v.id+']';}) + ' (see console for actual elements)'); $('#result2').html('filteredDivs2: '+ filteredDivs2.toArray() .map(function (v) {return '[div#'+v.id+']';}) + ' (see console for actual elements)'); // log to console console.log(filteredDivs); console.log(filteredDivs2); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div id="bg1" data-50="background-position:0px 0px;" data-end="background-position:-500px -10000px;"></div> <div id="bg2" data-200="background-position:0px 0px;" data-end="background-position:-500px -8000px;"></div> <div id="bg3" data-300="background-position:0px 0px;" data-end="background-position:-500px -6000px;"></div> <div id="bg4" data-600="background-position:0px 0px;" data-end="background-position:-500px -10000px;"></div> <div id="bg5" data-150="background-position:0px 0px;" data-end="background-position:-500px -8000px;"></div> <div id="bg6" data-800="background-position:0px 0px;" data-end="background-position:-500px -6000px;"></div> <div id="result"></div> <div id="result2"></div> 

Answer 4

編輯，更新

嘗試

// return `filtered` array of `DOM` elememts  
// having `data-*` `key` greater than `rangeStart` and less than `rangeStop`
var elem = $("div")
, rangeStart = 100
, rangeStop = 500
, filtered = elem.filter(function(i, el) {
    var _range = Number( Object.keys( $(el).data() || el.dataset )[0] );
    return ( _range > rangeStart && _range < rangeStop )
}).get();

 var elem = $("div") , rangeStart = 100 , rangeStop = 500 , filtered = elem.filter(function(i, el) { var _range = Number( Object.keys( $(el).data() || el.dataset )[0] ); return ( _range > rangeStart && _range < rangeStop ) }).get(); filtered.forEach(function(el) { el.style.color = "blue" }) 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> <div id="bg1" data-50="background-position:0px 0px;" data-end="background-position:-500px -10000px;">50</div> <div id="bg2" data-200="background-position:0px 0px;" data-end="background-position:-500px -8000px;">200</div> <div id="bg3" data-300="background-position:0px 0px;" data-end="background-position:-500px -6000px;">300</div> <div id="bg4" data-600="background-position:0px 0px;" data-end="background-position:-500px -10000px;">600</div> <div id="bg5" data-150="background-position:0px 0px;" data-end="background-position:-500px -8000px;">150</div> <div id="bg6" data-800="background-position:0px 0px;" data-end="background-position:-500px -6000px;">800</div>