[英]“How do I use jQuery's form.serialize but exclude empty fields” does not work (with php)
I'd like to use How do I use jQuery's form.serialize but exclude empty fields but it does not work. 我想使用如何使用jQuery的form.serialize,但排除空字段,但它不起作用。 I used a minimal example that redirects to a php script: 我使用了一个最小的示例来重定向到php脚本:
<html><head>
<script src="jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$('#myForm').submit(function(){
$("#myForm :input[value!='']").serialize();
alert('JavaScript done');
});
});
</script>
</head>
<body>
<form id="myForm" action="php.php" method="get">
<input id=id1 name=name1 type="text" /><br>
<input id=id2 name=name2 type="text" /><br>
<input id=id3 name=name3 type="text" /><br>
<input id=id4 name=name4 type="text" />
<input type="submit" value="submit form"/>
</form>
</body></html>
An here is the php script 这是PHP脚本
<?php
print_r($_GET);
?>
If I write "111" only into the first textbox, I get from php: 如果我只在第一个文本框中输入“ 111”,我将从php中获得:
Array ( [name1] => 111 [name2] => [name3] => [name4] => )
Thus, all fields made it into the get parameters. 因此,所有字段都将其放入get参数。
Can you please help me? 你能帮我么?
TIA TIA
You cannot use attribute selector for value
as it is a changing property. 您不能将属性选择器用作value
因为它是一个不断变化的属性。
$(document).ready(function () {
$('#myForm').submit(function () {
$(this).find(":input").filter(function () {
return $.trim(this.value).length > 0
}).serialize();
alert('JavaScript done');
});
});
Note: just serializing the input fields does not change in form submission, it can be used only if the form is submitted via ajax. 注意:仅对输入字段进行序列化不会在表单提交中进行更改,仅当通过ajax提交表单时才可以使用它。
If you want to do a normal form submission but want to remove the empty fields then use .remove() 如果您要进行常规表单提交但要删除空白字段,请使用.remove()
$(document).ready(function () {
$('#myForm').submit(function () {
$(this).find(":input").filter(function () {
return $.trim(this.value).length == 0
}).remove();
alert('JavaScript done');
});
});
You need to AJAX the form - just calling serialize does not remove the fields from the request 您需要AJAX表单-仅调用序列化操作不会从请求中删除字段
$('#myForm').on("submit",function (e) {
e.preventDefault(); // cancel the form itself
var opts = $(this).find(":input").filter(function () {
return $.trim(this.value).length > 0;
}).serialize();
$.get($('#myForm').attr("action"),opts,function(data) {
alert(data);
});
});
You can try it with ajax, and get the array data in php file, see below code. 您可以尝试使用ajax,并在php文件中获取数组数据,请参见以下代码。
<html><head>
<script src="jquery-1.7.1.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$('#submit_form').click(function(e){
$("#myForm :input[value!='']").serialize();
var form_data= $("#myForm :input[value!='']").serializeArray();
$.post("php.php",form_data,function(data){
alert('JavaScript done');
},"json");
e.preventDefault();
});
});
</script>
</head>
<body>
<form id="myForm">
<input id=id1 name=name1 type="text" /><br>
<input id=id2 name=name2 type="text" /><br>
<input id=id3 name=name3 type="text" /><br>
<input id=id4 name=name4 type="text" />
<input type="submit" id="submit_form" value="submit form"/>
</form>
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