如何通过在文本框中插入值来选择下拉菜单 [英] How to select dropdown by inserting value in the text box

问题描述

你好，我有一个从数据库中获取数据的下拉菜单。忘记数据库，我在下拉选择前面有一个文本框。逻辑是，如果我输入文本，如果文本中键入的值与下拉列表中的值不匹配，则应该从下拉列表中自动选择该值，然后用户可以选择下拉列表。任何帮助将非常感激。

Hello i have a dropdown which is fetching data from a database. Forget about the database, i have a text box in front of the dropdown select. The logic is if i type in the text the value should be selected automatically from the dropdown if the value typed in the text not matched with the values in the dropdown, then the user can select the dropdown. Any help would be much appreciated.

这是我的html代码！

Here is my html code!

<div class="form-group">
                <label class="col-sm-4 control-label">Scheme**</label>
                <div class="col-sm-4">
                    <select class="form-control" name="scheme" id="scheme">
                        <?php
                        for ($column = 'A'; $column <= $lastcol; $column++) {
                            echo '<option value="' . $column . '">' . $worksheet->getCell($column . '1')->getValue() . '</option>';
                        }
                        ?>
                    </select>
                </div>
                <div class="col-sm-4">
                    <input type="text" class="form-control" id="txt_scheme" name="txt_scheme" placeholder="Or Type here">
                </div>
            </div>

在下拉菜单中获取这些值

In dropdown i m getting these values

QC code 
Analyte 
Assay Value 
Assigned Value  
STANDARDDEVIATION   
ACCEPTABLEMIN   
ACCEPTABLEMAX   
Sample ID   
Date

推荐答案

<label for="">Enter Value</label>
<input type="text" class="textVal">
<select name="" id="listItems">
</select>


var listItems = ["One","Two","Three","Four","Five","Six"];

for (var i = 0; i < listItems.length; i++) {
  console.log(listItems[i]);
  $("#listItems").append("<option>" + listItems[i] + "</option>")
}

$(".textVal").on("focusout",function(){
  for (var i = 0; i < listItems.length; i++) {
    console.log(listItems[i]);
    if(listItems[i] == $(this).val()) {
        $("#listItems").val($(this).val());
    }    
  }
})

这篇关于如何通过在文本框中插入值来选择下拉菜单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！