Question

如果名为denominationcomune _ {{loop.index}}和denominationcomune _ {{loop.index}}的输入为空且不是所有输入，我如何检入jQuery？

我有这样的树枝：

<form action="" method="post">
    {% for mat in mat_temp_array %}
        <input type="text" name="nomentite_{{loop.index}}"/>
        <input type="text" name="denominationcomune_{{loop.index}}" value="{{ mat.denominationcommun }}"/>
        <input type="text" name="denominationcomerce_{{loop.index}}" value="{{ mat.denominationcomerce }}"/>
    {% endfor %}

     <input type="submit" class="btn" value="save"/>
</form>

Answer 1

var empty = true;
$('input[type="text"]').each(function(){
   if($(this).val()!=""){
      empty =false;
      return false;
    }
 });

这应该查看所有输入并将空var设置为false，如果至少有一个不为空。

Answer 2

你可以使用简单的jQuery循环来完成它。

总代码

<!DOCTYPE html>
 <html lang="en">
  <head>
   <meta charset="UTF-8">
   <title></title>
  <script type="text/javascript" src="http://code.jquery.com/jquery.min.js"></script>
  <style>
select,textarea,input[type="text"],input[type="password"],input[type="datetime"],input[type="datetime-local"],input[type="date"],input[type="month"],input[type="time"],input[type="week"],input[type="number"],input[type="email"],input[type="url"],input[type="search"],input[type="tel"],input[type="color"],.uneditable-input{display:inline-block;height:20px;padding:4px;margin-bottom:9px;font-size:13px;line-height:18px;color:#555555;}
textarea{height:auto;}
select,textarea,input[type="text"],input[type="password"],input[type="datetime"],input[type="datetime-local"],input[type="date"],input[type="month"],input[type="time"],input[type="week"],input[type="number"],input[type="email"],input[type="url"],input[type="search"],input[type="tel"],input[type="color"],.uneditable-input{background-color:#ffffff;border:1px solid #cccccc;-webkit-border-radius:3px;-moz-border-radius:3px;border-radius:3px;-webkit-box-shadow:inset 0 1px 1px rgba(0, 0, 0, 0.075);-moz-box-shadow:inset 0 1px 1px rgba(0, 0, 0, 0.075);box-shadow:inset 0 1px 1px rgba(0, 0, 0, 0.075);-webkit-transition:border linear 0.2s,box-shadow linear 0.2s;-moz-transition:border linear 0.2s,box-shadow linear 0.2s;-ms-transition:border linear 0.2s,box-shadow linear 0.2s;-o-transition:border linear 0.2s,box-shadow linear 0.2s;transition:border linear 0.2s,box-shadow linear 0.2s;}textarea:focus,input[type="text"]:focus,input[type="password"]:focus,input[type="datetime"]:focus,input[type="datetime-local"]:focus,input[type="date"]:focus,input[type="month"]:focus,input[type="time"]:focus,input[type="week"]:focus,input[type="number"]:focus,input[type="email"]:focus,input[type="url"]:focus,input[type="search"]:focus,input[type="tel"]:focus,input[type="color"]:focus,.uneditable-input:focus{border-color:rgba(82, 168, 236, 0.8);outline:0;outline:thin dotted \9;-webkit-box-shadow:inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(82,168,236,.6);-moz-box-shadow:inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(82,168,236,.6);box-shadow:inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(82,168,236,.6);height: 20px;}
select,input[type="radio"],input[type="checkbox"]{margin:3px 0;*margin-top:0;line-height:normal;cursor:pointer;}
select,input[type="submit"],input[type="reset"],input[type="button"],input[type="radio"],input[type="checkbox"]{width:auto;}
.uneditable-textarea{width:auto;height:auto;}
#country{height: 30px;}
.highlight
{
    border: 1px solid red !important;
}
</style>
<script>
function test()
{
var isFormValid = true;

$(".bs-example input").each(function(){
    if ($.trim($(this).val()).length == 0){
        $(this).addClass("highlight");
        isFormValid = false;
        $(this).focus();
    }
    else{
        $(this).removeClass("highlight");
     }
    });

    if (!isFormValid) { 
    alert("Please fill in all the required fields (indicated by *)");
}

return isFormValid;
}   
</script>
</head>
<body>
<div class="bs-example">
<form onsubmit="return test()">
    <div class="form-group">
        <label for="inputEmail">Email</label>
        <input type="text" class="form-control" id="inputEmail" placeholder="Email">
    </div>
    <div class="form-group">
        <label for="inputPassword">Password</label>
        <input type="password" class="form-control" id="inputPassword" placeholder="Password">
    </div>
    <button type="submit" class="btn btn-primary">Login</button>
</form>
</div>
</body>
</html>

Answer 3

你可以这样做：

bool areFieldEmpty = YES;
//Label to leave the loops
outer_loop;

//For each input (except of submit) in your form
$('form input[type!=submit]').each(function(){
   //If the field's empty
   if($(this).val() != '')
   {
      //Mark it
      areFieldEmpty = NO;
      //Then leave all the loops
      break outer_loop;
   }
});

//Then test your bool

Answer 4

定义这样的辅助函数

function checkWhitespace(inputString){

    let stringArray = inputString.split(' ');

    let output = true;

    for (let el of stringArray){
        if (el!=''){
            output=false;
        }
    }

    return output;
}

然后通过作为参数传递检查输入字段的值。如果函数返回 true ，则意味着值仅是空白。

例如

let inputValue = $('#firstName').val();
if(checkWhitespace(inputValue)) {
  // Show Warnings or return warnings
}else {
  // // Block of code-probably store input value into database
}

Answer 5

我建议向要检查的所有元素添加class='denominationcomune'，然后使用以下内容：

function are_elements_emtpy(class_name)
{
  return ($('.' + class_name).filter(function() { return $(this).val() == ''; }).length == 0)
}

Answer 6

$（'input [type =“ text”]'）。get（）。some（item => item.value！==''）;

Answer 7

OSError                                   Traceback (most recent call last)
<ipython-input-1-045bd590fd18> in <module>
      3 import os.path
      4 import time
----> 5 import numpy as np
      6 from bitmex import bitmex
      7 from binance.client import Client

c:\users\username\lib\site-packages\numpy\__init__.py in <module>
    136 
    137     # Allow distributors to run custom init code
--> 138     from . import _distributor_init
    139 
    140     from . import core

c:\users\username\lib\site-packages\numpy\_distributor_init.py in <module>
     24                 # NOTE: would it change behavior to load ALL
     25                 # DLLs at this path vs. the name restriction?
---> 26                 WinDLL(os.path.abspath(filename))
     27                 DLL_filenames.append(filename)
     28         if len(DLL_filenames) > 1:

A:\Anaconda\lib\ctypes\__init__.py in __init__(self, name, mode, handle, use_errno, use_last_error)
    354 
    355         if handle is None:
--> 356             self._handle = _dlopen(self._name, mode)
    357         else:
    358             self._handle = handle

OSError: [WinError 193] %1 is not a valid Win32 application

检查输入表单是否为空jQuery

7 个答案: