Jquery mobile中的Jquery动态字段

Jquery dynamic fields in jquery mobile

本文关键字：Jquery 字段 动态 中的 mobile      更新时间：2023-09-26

我正在创建一个简单的动态表单，当用户按下2时，将显示两个字段，如果按下1，则显示

面临的问题：如果用户输入1，则显示一个字段，但如果用户删除1并按2而不是1，则会显示的3个字段

HTML代码

<label for="textarea2b">Quantity</label>
<input type="number" name="name2" id="quantitypickup" onkeyup="showdimension()" value="" data-clear-btn="true" placeholder="">
<div id="dimshow" class="row">
</div>

JS代码

function showdimension() {
    var q = $("#quantitypickup").val();
    var r = $("#dimshow");
    if (q == "0" || q == "" || q == null) {
        r.hide();
        r.html('');
    } else {
        r.show();
        for (var i = 0; i < q; i++) {
            r.append('  <div class="col-xs-6"><label>Item Name ' + (i + 1) + '</label><input type="text" name="name2" id="itemname" onkeyup="" value="" data-clear-btn="true" placeholder=""></div><div class="col-xs-6"><div class="row"><div class="col-xs-4"><label>Length</label><input type="number" name="name2"  onkeyup="" value="" data-clear-btn="true" placeholder=""><label style="text-align:center">inches</label></div><div class="col-xs-4"><label>Width</label><input type="number" name="name2"  onkeyup="" value="" data-clear-btn="true" placeholder=""><label style="text-align:center">inches</label></div><div class="col-xs-4"><label>Height</label><input type="number" name="name2" value="" data-clear-btn="true" placeholder=""><label style="text-align:center">inches</label></div></div> </div></div>');
        }
    }
}

请帮助

每次用户通过$('.row').html('');输入数字时清除您的html row

function showdimension() {
  $('.row').html('');
    var q = $("#quantitypickup").val();
    var r = $("#dimshow");
    if (q == "0" || q == "" || q == null) {
        r.hide();
        r.html('');
    } else {
        r.show();
        for (var i = 0; i < q; i++) {
            r.append('  <div class="col-xs-6"><label>Item Name ' + (i + 1) + '</label><input type="text" name="name2" id="itemname" onkeyup="" value="" data-clear-btn="true" placeholder=""></div><div class="col-xs-6"><div class="row"><div class="col-xs-4"><label>Length</label><input type="number" name="name2"  onkeyup="" value="" data-clear-btn="true" placeholder=""><label style="text-align:center">inches</label></div><div class="col-xs-4"><label>Width</label><input type="number" name="name2"  onkeyup="" value="" data-clear-btn="true" placeholder=""><label style="text-align:center">inches</label></div><div class="col-xs-4"><label>Height</label><input type="number" name="name2" value="" data-clear-btn="true" placeholder=""><label style="text-align:center">inches</label></div></div> </div></div>');
        }
    }
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<label for="textarea2b">Quantity</label>
<input type="number" name="name2" id="quantitypickup" onkeyup="showdimension()" value="" data-clear-btn="true" placeholder="">
<div id="dimshow" class="row">
</div>

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