Question

我试图从下降中挑选一个数字数值,这里是代码线。

rowid = LogGridId(gridId, row);
$(`#${rowid}`).find(`select option[value^= IDnum ]`).prop("selected", true);

But I want showing the first value (1) before first semicolon in option value when ID=1 is selected from example <option value="1;A;0.0000;False;True">ID10 (9.00%)</option> <option value="15;T;0.0000;True;True">Jon (10.00%)</option> <option value="12;Y;0.0000;True;True">Bam (0.00%)</option>

现在我的问题是,在我选择ID=1时,它总是以1为起点显示最低地位,因此,在我选择ID=1时,ID=12将显示这一点,但预期结果显示ID=1。

Do anyone know how to solve it? by just modify this line of code, not include option value above. $(#${rowid}).find(select option[value^= IDnum ]).prop("selected", true);

我如何从选择价值中适当提取数字价值,然后将价值分成头半殖民地

Answer 1

使用分立,由半殖民地分立,头一次。

 const displayValue = (e) => 
    document.getElementById( selectedValueDisplay ).innerHTML =
     Selected Value:   + e.target.value.split( ; )[0];

<Select onchange="displayValue(event)">
<option value="1;A;0.0000;False;True">ID10 (9.00%)</option>
<option value="15;T;0.0000;True;True">Jon (10.00%)</option>
<option value="12;Y;0.0000;True;True">Bam (0.00%)</option>
<option value="2;T;0.0000;False;True">Pole (0.00%)</option>
</Select>

<p id="selectedValueDisplay">Selected Value: </p>

Answer 2

你们可以 gr取价值,把价值分开, first首象样:

$( select ).on( change , function(e) {
  $( #selected-value ).text( Selected:   + $(this).val().split( ; ).shift());
}).trigger( change );

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
<select>
  <option value="1;A;0.0000;False;True">ID10 (9.00%)</option>
  <option value="15;T;0.0000;True;True">Jon (10.00%)</option>
  <option value="12;Y;0.0000;True;True">Bam (0.00%)</option>
  <option value="2;T;0.0000;False;True">Pole (0.00%)</option>
</select>

<p id="selected-value">Selected:</p>

这里是一片杂草:

(function($) {
  $.fn.tokenizedValue = function(delimiter =  ; ) {
    return this.val().split(delimiter);
  };
  $.fn.valueAt = function(index = 0, delimiter =  ; ) {
    return this.tokenizedValue(delimiter)[index];
  };
  $.fn.firstValue = function(index = 0, delimiter =  ; ) {
    return this.tokenizedValue(delimiter).shift();
  };
  $.fn.lastValue = function(index = 0, delimiter =  ; ) {
    return this.tokenizedValue(delimiter).pop();
  };
})(jQuery);

$( select ).on( change , function(e) {
  $( #selected-value ).text( Selected:   + $(this).firstValue());
}).trigger( change );

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
<select>
  <option value="1;A;0.0000;False;True">ID10 (9.00%)</option>
  <option value="15;T;0.0000;True;True">Jon (10.00%)</option>
  <option value="12;Y;0.0000;True;True">Bam (0.00%)</option>
  <option value="2;T;0.0000;False;True">Pole (0.00%)</option>
</select>

<p id="selected-value">Selected:</p>

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