如何自动选择下拉列表 [英] How to auto select the dropdown

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本文介绍了如何自动选择下拉列表的处理方法，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

我有一个 HTML 表格，其中有几个输入字段，因此当我从 dropdown 中选择任何选项时，我将填充表格的一行，在该行 itemname 作为输入字段，它是 autocomplete.

所以我正在做的是我有一个类似 A BR SB EX~333 的字符串，其中 333 是项目代码，other 是名称，所以当我输入 333 时，该项目会被填充.然后按下回车键，我会专注于做一些计算.

我想要做什么

  • 当我在自动完成字段中输入例如 333 并且只有一个选项时，我想将其填充到我的 inputfield 中.我不希望用户手动选择该选项，只需键入是否与单个 name 匹配，然后按 Enter 将其填充到输入字段中.

我的代码

var tableData = {ALMOND CHBAR~2402":{"itemName": "ALMOND CHBAR","itemCode": "2402",成本价格":20.0，"gstPercentage": 14.5,先生":30.0},A BR SB EX~333":{"itemName": "BR SB EX","itemCode": "333",成本价格":1.0，"gstPercentage": 0.0,先生":1.0}}var autoCompleteData = Object.keys(tableData);函数 rowappend(tbody) {const 标记 =`<td><input type="text" class="form-control commanChange" id="itemNametd" name="itemNametd"></td><td><input type="text" name="itemCodetd" id="itemCodetd" class="form-control commandd" readonly="readonly"></td><td><input type="text" name="mrptd" id="mrptd" class="form-control commandd" readonly="readonly"></td><td><input type="text" name="purRatetd" id="purRatetd" class="form-control command"></td><td><input type="tel" id="unitQtytd"class="form-control commanChange" name="unitQtytd"></td><td><input type="tel" id="discPercentagetd"class="form-control commanChange" name="discPercentagetd" ></td><td><input type="text" name="discAmttd" id="discAmttd" class="form-control command" readonly="readonly"></td><td><input type="text" name="gstPercentagetd" id="gstPercentagetd" class="form-control commandd" readonly="readonly"></td><td><input type="text" name="gstAmttd" id="gstAmttd" class="form-control commandd" readonly="readonly"></td><td><input type="text" name="totalAmttd" id="totalAmttd" class="form-control command" readonly="readonly"></td><td style="background-color: white;border: 1px white"><i class="fas fa-times fa-2x remove-btn"></i></td></tr>`$(tbody).append(markup);setTimeout(() => $("[name=itemNametd]", tbody).last().focus(), 100);$("[name=itemNametd]", tbody).last().autocomplete({来源:自动完成数据});}rowappend($('tbody', '#tableInvoice'))函数 getValues(row) {const search = ($('[name=itemNametd]', row).val()).toString()常量值 = 表数据[搜索];CostPrice = value.costPrice;如果(值){$(row).find("[name=itemCodetd]").val(value.itemCode);$(row).find("[name=mrptd]").val(value.mrp);$(row).find("[name=purRatetd]").val(CostPrice);$(row).find("[name=gstPercentagetd]").val(value.gstPercentage);}}document.addEventListener("keydown", function(e) {const row = e.target.parentElement.parentElementif (event.target.matches('[name=itemNametd]')) {var keycode = e.keyCode ||事件.e;如果(键码=='13'){getValues(e.target.parentElement.parentElement)$("[name=purRatetd]").focus();}}});$(document).on('focusout', (e) => {const row = e.target.parentElement.parentElementif (e.target.matches("[name=itemNametd]")) {getValues(e.target.parentElement.parentElement)$("[name=purRatetd]").focus();}});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script><script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script><link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.2/css/bootstrap.min.css" rel="stylesheet"/><link href="https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css" rel="stylesheet"/><div class="row tableInvoice" id="commonDvScroll"><table class="table table-bordered" id="tableInvoice"><头><tr><th id="itemNameth" class="commanth">项目名称</th><th id="itemCodeth" class="commanth">项目代码</th><th id="unitQtyth" class="commanth">单位数量</th><th id="purRateth" class="commanth">Pur.Rate</th><th id="discPercentageth" class="commanth">Disc%</th><th id="discAmtth" class="commanth">Disc Amt</th><th id="gstPercentageth" class="commanth">Gst%</th><th id="gstAmtth" class="commanth">Gst Amt</th><th id="totalAmtth" class="commanth">总金额</th></tr></thead></tbody>

当我输入并且只剩下一个选项作为选项时，我希望它出现在输入字段中，这样用户就不会手动选择它.

如果有任何其他方法可以执行此自动完成功能，我愿意使用它，我只是希望在输入时填写输入字段，因为我不想手动选择它.

解决方案

I have found something in j query autocomplete plug i.e

autoSelectFirst: true,自动对焦:真

这就是我想要实现的目标

var tableData = {ALMOND CHBAR~2402":{"itemName": "ALMOND CHBAR","itemCode": "2402",成本价格":20.0，"gstPercentage": 14.5,先生":30.0},A BR SB EX~333":{"itemName": "BR SB EX","itemCode": "333",成本价格":1.0，"gstPercentage": 0.0,先生":1.0}}var autoCompleteData = Object.keys(tableData);函数 rowappend(tbody) {const 标记 =`<td><input type="text" class="form-control commanChange" id="itemNametd" name="itemNametd"></td><td><input type="text" name="itemCodetd" id="itemCodetd" class="form-control commandd" readonly="readonly"></td><td><input type="text" name="mrptd" id="mrptd" class="form-control commandd" readonly="readonly"></td><td><input type="text" name="purRatetd" id="purRatetd" class="form-control command"></td><td><input type="tel" id="unitQtytd"class="form-control commanChange" name="unitQtytd"></td><td><input type="tel" id="discPercentagetd"class="form-control commanChange" name="discPercentagetd" ></td><td><input type="text" name="discAmttd" id="discAmttd" class="form-control command" readonly="readonly"></td><td><input type="text" name="gstPercentagetd" id="gstPercentagetd" class="form-control commandd" readonly="readonly"></td><td><input type="text" name="gstAmttd" id="gstAmttd" class="form-control commandd" readonly="readonly"></td><td><input type="text" name="totalAmttd" id="totalAmttd" class="form-control command" readonly="readonly"></td><td style="background-color: white;border: 1px white"><i class="fas fa-times fa-2x remove-btn"></i></td></tr>`$(tbody).append(markup);setTimeout(() => $("[name=itemNametd]", tbody).last().focus(), 100);$("[name=itemNametd]", tbody).last().autocomplete({来源:autoCompleteData，自动选择第一:真，自动对焦:真});}rowappend($('tbody', '#tableInvoice'))函数 getValues(row) {const search = ($('[name=itemNametd]', row).val()).toString()常量值 = 表数据[搜索];CostPrice = value.costPrice;如果(值){$(row).find("[name=itemCodetd]").val(value.itemCode);$(row).find("[name=mrptd]").val(value.mrp);$(row).find("[name=purRatetd]").val(CostPrice);$(row).find("[name=gstPercentagetd]").val(value.gstPercentage);}}document.addEventListener("keydown", function(e) {const row = e.target.parentElement.parentElementif (event.target.matches('[name=itemNametd]')) {var keycode = e.keyCode ||事件.e;如果(键码=='13'){getValues(e.target.parentElement.parentElement)$("[name=purRatetd]").focus();}}});$(document).on('focusout', (e) => {const row = e.target.parentElement.parentElementif (e.target.matches("[name=itemNametd]")) {getValues(e.target.parentElement.parentElement)$("[name=purRatetd]").focus();}});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script><script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script><link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.2/css/bootstrap.min.css" rel="stylesheet"/><link href="https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css" rel="stylesheet"/><div class="row tableInvoice" id="commonDvScroll"><table class="table table-bordered" id="tableInvoice"><头><tr><th id="itemNameth" class="commanth">项目名称</th><th id="itemCodeth" class="commanth">项目代码</th><th id="unitQtyth" class="commanth">单位数量</th><th id="purRateth" class="commanth">Pur.Rate</th><th id="discPercentageth" class="commanth">Disc%</th><th id="discAmtth" class="commanth">Disc Amt</th><th id="gstPercentageth" class="commanth">Gst%</th><th id="gstAmtth" class="commanth">Gst Amt</th><th id="totalAmtth" class="commanth">总金额</th></tr></thead></tbody>

我正在发布这个答案，但我也准备使用其他方法

I have an HTML table, inside which I have several input fields, so when I select any option from the dropdown I am populating one row of the table, inside that row itemname as input field which is autocomplete.

So what I am doing is I have a string like A BR SB EX~333 where 333 is the item code and other is a name, so when I type 333 that item gets populated. Then on pressing enter I am focusing out and doing some calculations.

What I am trying to do

  • When I type for instance 333 in autocomplete field and only one option is there I want to populate that inside my inputfield. I don't want the user to manually select that option, just type if that matched to a single name, then on pressing enter populate that inside the input field.

My code

var tableData = {
  "ALMOND CHBAR~2402": {
    "itemName": "ALMOND CHBAR",
    "itemCode": "2402",
    "costPrice": 20.0,
    "gstPercentage": 14.5,
    "mrp": 30.0
  },
  "A BR SB EX~333": {
    "itemName": "A BR SB EX",
    "itemCode": "333",
    "costPrice": 1.0,
    "gstPercentage": 0.0,
    "mrp": 1.0
  }
}


var autoCompleteData = Object.keys(tableData);

function rowappend(tbody) {

  const markup =
    `<tr>
									  <td>
									    <input type="text" class="form-control commanChange" id="itemNametd" name="itemNametd">
									  </td>
									  <td><input type="text" name="itemCodetd" id="itemCodetd" class="form-control commantd" readonly="readonly"></td>
									  <td><input type="text" name="mrptd" id="mrptd" class="form-control commantd" readonly="readonly"></td>
									  <td><input type="text" name="purRatetd" id="purRatetd" class="form-control commantd"></td>
									  <td>
									    <input type="tel" id="unitQtytd"class="form-control commanChange" name="unitQtytd">
									  </td>
						               			 
									  <td>
									    <input type="tel" id="discPercentagetd"class="form-control commanChange" name="discPercentagetd" >
									  </td>
									  <td><input type="text" name="discAmttd" id="discAmttd" class="form-control commantd" readonly="readonly"></td> 
									  <td><input type="text" name="gstPercentagetd" id="gstPercentagetd" class="form-control commantd" readonly="readonly"></td>
									  <td><input type="text" name="gstAmttd" id="gstAmttd" class="form-control commantd" readonly="readonly"></td>
									  <td><input type="text" name="totalAmttd" id="totalAmttd" class="form-control commantd" readonly="readonly"></td>
									  <td style="background-color: white;border: 1px white"><i class="fas fa-times fa-2x remove-btn"></i></td>
									  
									</tr>`

  $(tbody).append(markup);
  setTimeout(() => $("[name=itemNametd]", tbody).last().focus(), 100);

  $("[name=itemNametd]", tbody).last().autocomplete({
    source: autoCompleteData

  });




}
rowappend($('tbody', '#tableInvoice'))

function getValues(row) {

  const search = ($('[name=itemNametd]', row).val()).toString()
  const value = tableData[search];
  CostPrice = value.costPrice;

  if (value) {
    $(row).find("[name=itemCodetd]").val(value.itemCode);
    $(row).find("[name=mrptd]").val(value.mrp);
    $(row).find("[name=purRatetd]").val(CostPrice);

    $(row).find("[name=gstPercentagetd]").val(value.gstPercentage);
  }

}
document.addEventListener("keydown", function(e) {
  const row = e.target.parentElement.parentElement
  if (event.target.matches('[name=itemNametd]')) {

    var keycode = e.keyCode || event.e;
    if (keycode == '13') {

      getValues(e.target.parentElement.parentElement)
      $("[name=purRatetd]").focus();

    }
  }

});
$(document).on('focusout', (e) => {

  const row = e.target.parentElement.parentElement
  if (e.target.matches("[name=itemNametd]")) {


    getValues(e.target.parentElement.parentElement)
    $("[name=purRatetd]").focus();

  }
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.2/css/bootstrap.min.css" rel="stylesheet" />
<link href="https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css" rel="stylesheet" />

<div class="row tableInvoice" id="commonDvScroll">
  <table class="table table-bordered" id="tableInvoice">
    <thead>
      <tr>
        <th id="itemNameth" class="commanth">Item Name</th>
        <th id="itemCodeth" class="commanth">Item Code</th>
        <th id="unitQtyth" class="commanth">Unit Qty</th>
        <th id="purRateth" class="commanth">Pur.Rate</th>
        <th id="discPercentageth" class="commanth">Disc%</th>
        <th id="discAmtth" class="commanth">Disc Amt</th>
        <th id="gstPercentageth" class="commanth">Gst%</th>
        <th id="gstAmtth" class="commanth">Gst Amt</th>
        <th id="totalAmtth" class="commanth">Total Amount</th>
      </tr>
    </thead>
    <tbody>

    </tbody>

  </table>

</div>

When I type and there is only one item left as option I want that to come inside the input field so that the user does not select it manually.

If there is any other way to do this autocomplete I am open to use that, I just want so that while I am typing I should get the input field filled as I don't want to select it manually.

解决方案

I have found Something in j query autocomplete plug i.e

autoSelectFirst: true,
 autoFocus: true

this is doing what I am trying to achieve

var tableData = {
  "ALMOND CHBAR~2402": {
    "itemName": "ALMOND CHBAR",
    "itemCode": "2402",
    "costPrice": 20.0,
    "gstPercentage": 14.5,
    "mrp": 30.0
  },
  "A BR SB EX~333": {
    "itemName": "A BR SB EX",
    "itemCode": "333",
    "costPrice": 1.0,
    "gstPercentage": 0.0,
    "mrp": 1.0
  }
}


var autoCompleteData = Object.keys(tableData);

function rowappend(tbody) {

  const markup =
    `<tr>
									  <td>
									    <input type="text" class="form-control commanChange" id="itemNametd" name="itemNametd">
									  </td>
									  <td><input type="text" name="itemCodetd" id="itemCodetd" class="form-control commantd" readonly="readonly"></td>
									  <td><input type="text" name="mrptd" id="mrptd" class="form-control commantd" readonly="readonly"></td>
									  <td><input type="text" name="purRatetd" id="purRatetd" class="form-control commantd"></td>
									  <td>
									    <input type="tel" id="unitQtytd"class="form-control commanChange" name="unitQtytd">
									  </td>
						               			 
									  <td>
									    <input type="tel" id="discPercentagetd"class="form-control commanChange" name="discPercentagetd" >
									  </td>
									  <td><input type="text" name="discAmttd" id="discAmttd" class="form-control commantd" readonly="readonly"></td> 
									  <td><input type="text" name="gstPercentagetd" id="gstPercentagetd" class="form-control commantd" readonly="readonly"></td>
									  <td><input type="text" name="gstAmttd" id="gstAmttd" class="form-control commantd" readonly="readonly"></td>
									  <td><input type="text" name="totalAmttd" id="totalAmttd" class="form-control commantd" readonly="readonly"></td>
									  <td style="background-color: white;border: 1px white"><i class="fas fa-times fa-2x remove-btn"></i></td>
									  
									</tr>`

  $(tbody).append(markup);
  setTimeout(() => $("[name=itemNametd]", tbody).last().focus(), 100);

  $("[name=itemNametd]", tbody).last().autocomplete({
    source: autoCompleteData,
    autoSelectFirst: true,
    autoFocus: true

  });




}
rowappend($('tbody', '#tableInvoice'))

function getValues(row) {

  const search = ($('[name=itemNametd]', row).val()).toString()
  const value = tableData[search];
  CostPrice = value.costPrice;

  if (value) {
    $(row).find("[name=itemCodetd]").val(value.itemCode);
    $(row).find("[name=mrptd]").val(value.mrp);
    $(row).find("[name=purRatetd]").val(CostPrice);

    $(row).find("[name=gstPercentagetd]").val(value.gstPercentage);
  }

}
document.addEventListener("keydown", function(e) {
  const row = e.target.parentElement.parentElement
  if (event.target.matches('[name=itemNametd]')) {

    var keycode = e.keyCode || event.e;
    if (keycode == '13') {

      getValues(e.target.parentElement.parentElement)
      $("[name=purRatetd]").focus();

    }
  }

});
$(document).on('focusout', (e) => {

  const row = e.target.parentElement.parentElement
  if (e.target.matches("[name=itemNametd]")) {


    getValues(e.target.parentElement.parentElement)
    $("[name=purRatetd]").focus();

  }
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.2/css/bootstrap.min.css" rel="stylesheet" />
<link href="https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css" rel="stylesheet" />

<div class="row tableInvoice" id="commonDvScroll">
  <table class="table table-bordered" id="tableInvoice">
    <thead>
      <tr>
        <th id="itemNameth" class="commanth">Item Name</th>
        <th id="itemCodeth" class="commanth">Item Code</th>
        <th id="unitQtyth" class="commanth">Unit Qty</th>
        <th id="purRateth" class="commanth">Pur.Rate</th>
        <th id="discPercentageth" class="commanth">Disc%</th>
        <th id="discAmtth" class="commanth">Disc Amt</th>
        <th id="gstPercentageth" class="commanth">Gst%</th>
        <th id="gstAmtth" class="commanth">Gst Amt</th>
        <th id="totalAmtth" class="commanth">Total Amount</th>
      </tr>
    </thead>
    <tbody>

    </tbody>

  </table>

</div>

i am posting this answer, but I am ready to use other approaches also

这篇关于如何自动选择下拉列表的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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