检查输入表单是否为空 jQuery
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Check if inputs form are empty jQuery
提问by user2721553
How can I check in jQuery if inputs with name denominationcomune_{{loop.index}} and denominationcomune_{{loop.index}} are empty not all inputs ?
如果名称为 denominationcomune_{{loop.index}} 和 denominationcomune_{{loop.index}} 的输入不是所有输入都是空的，我如何检查 jQuery？
I have a twig like this:
我有一根这样的树枝：
<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>
回答by nubinub
var empty = true;
$('input[type="text"]').each(function(){
if($(this).val()!=""){
empty =false;
return false;
}
});
This should look all the input and set the empty var to false, if at least one is not empty.
这应该查看所有输入并将空变量设置为 false，如果至少有一个不为空。
回答by Bigood
You could do it like this :
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
回答by Shafiqul Islam
You can do it using simple jQuery loop.
您可以使用简单的 jQuery 循环来完成。
Total code
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 ;-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>
回答by Robin
Define a helper function like this
定义一个这样的辅助函数
function checkWhitespace(inputString){
let stringArray = inputString.split(' ');
let output = true;
for (let el of stringArray){
if (el!=''){
output=false;
}
}
return output;
}
Then check your input field value by passing through as an argument. If function returns true, that means value is only white space.
然后通过作为参数传递来检查您的输入字段值。如果函数返回true，则意味着值只是空白。
As an example
举个例子
let inputValue = $('#firstName').val();
if(checkWhitespace(inputValue)) {
// Show Warnings or return warnings
}else {
// // Block of code-probably store input value into database
}
回答by double_u1
I'd suggest to add an class='denominationcomune'to all elements that you want to check and then use the following:
我建议向class='denominationcomune'您要检查的所有元素添加一个，然后使用以下内容：
function are_elements_emtpy(class_name)
{
return ($('.' + class_name).filter(function() { return $(this).val() == ''; }).length == 0)
}
回答by odd onr
$('input[type="text"]').get().some(item => item.value !== '');
$('input[type="text"]').get().some(item => item.value !== '');
