javascript - jquery - 将数据行索引值动态存储到数组中

Question

我想将data-rowindex值动态保存到数组中

<tr class="ewTableRow" data-rowindex="1" id="r1_assessment_training" data-rowtype="2">

我尝试了下面的代码。 (我不确定下面的代码是否正确)？

var a = $('#tbl_assessment_traininggrid tr').length;

var row_count = [];
    for (var i = 1; i <= a; i++) {
        var rowCntrl = $("data-rowindex[i]").val();
        alert(rowCntrl);
        row_count.push(rowCntrl);
    }

Answer 1

另请注意，如果您想选择带有变量 i 的元素，请使用 $("[data-rowindex="+ i + "]")

var a = $('#tbl_assessment_traininggrid tr').length;

var row_count = [];
for (var i = 1; i <= a; i++) {
  var rowCntrl = $("[data-rowindex=" + i + "]").attr("data-rowindex");
  alert(rowCntrl);
  row_count.push(rowCntrl);
}

console.log(row_count)

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table id="tbl_assessment_traininggrid">
  <tr class="ewTableRow" data-rowindex="1" id="r1_assessment_training" data-rowtype="2"></tr>
  <tr class="ewTableRow" data-rowindex="2" id="r2_assessment_training" data-rowtype="2"></tr>
  <tr class="ewTableRow" data-rowindex="3" id="r3_assessment_training" data-rowtype="2"></tr>
</table>