onsubmit方法不会停止提交 [英] onsubmit method doesn't stop submit
问题描述
我的 onsubmit 不起作用。我的想法是放置一些必填字段，为了达到这个目的，我在HTML中的一个表单中使用 onsubmit 方法来调用JavaScript函数。
这个想法是，如果所有必填字段都已填充，那么javascript函数将返回 不幸的是，该函数确实返回 我将删除一些代码以使我的观点可以被感知。 您应该使用 My The idea was if all the mandatory fields were filled, the javascript function would return Unfortunately, the function does return I'm going to cut off some code to make my point of view perceptible.
You should use 这篇关于onsubmit方法不会停止提交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！ true ，并且它会移至页面 /control/Cadastro.php 。否则，如果任何必填字段为空，它将返回 false ，并且它不会移动到页面 /control/Cadastro.php
false ，如果所有的必填字段未按预期填充，但它仍会移至页面 /control/Cadastro.php ，即使它不应该。
< ！DOCTYPE html>
< html>
< head>
< script>
函数ValidateRequiredFields（）
{
var message = new String（'\ nCamposobrigatórios：\\\
'）;
var flag = new Boolean（1）;
var x = document.forms [theForm] [nr_processoCA] .value;
if（x == null || x ==）{
message + ='\\\
Nºdo processo \\\
';
flag = new Boolean（0）;
}
if（flag == false）{
alert（message）;
}
返回标志;
}
< / script>
< / head>
< body>
< form name =theFormonsubmit =return ValidateRequiredFields（）method =postaction =../ control / Cadastro.php>
Nº做Processo：< br>
< input type =textname =nr_processoCAclass =input-xlarge>
< br>
< div class =row-fluidstyle =text-align：center;>
< input type =submitclass =btn btn-primary btn-largevalue =Gravar>
< / div>
< / form>
< / body>
< / html>
preventDefault 在您的onsubmit函数中。我修改了你的代码：
函数ValidateRequiredFields（）
{
var message = new String（'\\ \\ nCamposobrigatórios：\\\
'）;
var flag = new Boolean（1）;
var x = document.forms [theForm] [nr_processoCA] .value;
if（x == null || x ==）{
message + ='\\\
Nºdo processo \\\
';
flag = new Boolean（0）;
if（flag == false）{
if（event.preventDefault）{
event.preventDefault（）;
} else {
event.returnValue = false; //对于IE，因为不支持preventDefault;
}
alert（message）;
}
返回标志;
}
onsubmit is not working. My idea was to put some mandatory fields and, in order to achieve that, I was using the onsubmit method inside a form in HTML that called a JavaScript function.true and it would move on to page /control/Cadastro.php. Otherwise, if any mandatory field was empty, it would return false and it wouldn't move to page /control/Cadastro.php, staying in the current page until true.false if all the mandatory fields are not filled, as expected, but it still moves to page /control/Cadastro.php, even if it shouldn't.<!DOCTYPE html>
<html>
<head>
<script>
function ValidateRequiredFields()
{
var message = new String('\nCampos obrigatórios:\n');
var flag=new Boolean(1);
var x=document.forms["theForm"]["nr_processoCA"].value;
if (x==null || x==""){
message += '\nNº do processo\n';
flag = new Boolean(0);
}
if (flag == false){
alert(message);
}
return flag;
}
</script>
</head>
<body>
<form name="theForm" onsubmit="return ValidateRequiredFields()" method="post" action="../control/Cadastro.php">
Nº do Processo: <br>
<input type="text" name="nr_processoCA" class="input-xlarge">
<br>
<div class="row-fluid" style="text-align:center;">
<input type="submit" class="btn btn-primary btn-large" value="Gravar">
</div>
</form>
</body>
</html>
preventDefault inside your onsubmit function. I modified your code:function ValidateRequiredFields()
{
var message = new String('\nCampos obrigatórios:\n');
var flag=new Boolean(1);
var x=document.forms["theForm"]["nr_processoCA"].value;
if (x==null || x==""){
message += '\nNº do processo\n';
flag = new Boolean(0);
}
if (flag == false){
if(event.preventDefault){
event.preventDefault();
}else{
event.returnValue = false; // for IE as dont support preventDefault;
}
alert(message);
}
return flag;
}
