使用Javascript和Prototype防止多次提交
我试图通过Prototype API使用Javascript防止HTML表单中的多次提交。以下是我用来解决此问题的代码片段:使用Javascript和Prototype防止多次提交,javascript,html,forms,prototypejs,Javascript,Html,Forms,Prototypejs,我试图通过Prototype API使用Javascript防止HTML表单中的多次提交。以下是我用来解决此问题的代码片段: function preventMultipleSubmits() { this.select('input[type="submit"]').invoke('disable'); return true; } document.observe('dom:loaded', function() { var forms = $A(document.
function preventMultipleSubmits() {
this.select('input[type="submit"]').invoke('disable');
return true;
}
document.observe('dom:loaded', function() {
var forms = $A(document.getElementsByTagName('form'));
forms.each(function(form) {
form.observe('submit', preventMultipleSubmits)
});
});
该代码段的问题是提交表单不再调用服务器端。我知道IE浏览器不太支持CCS选择器,但问题也与Firefox有关,我想首先关注FF
环境和工具:
- Firefox13.0
- 原型1.6.1
submit
按钮。您仍然可以使用enter for one field表单进行提交
您可以尝试以下方法:
<script type="text/javascript">
function preventMultipleSubmits(event) {
if (this.hasClassName('allow-one-time-submit')) {
this.removeClassName('allow-one-time-submit');
// don't stop the event
} else {
alert('You already submitted');
event.stop();
}
}
document.observe('dom:loaded', function() {
var forms = $A(document.getElementsByTagName('form'));
forms.each(function(form) {
// add Class Name to each and every form on load
form.addClassName('allow-one-time-submit');
form.observe('submit', preventMultipleSubmits)
});
});
</script>
<form action="http://www.example.com/path/to/action" class="allow-one-time-submit">
<input type="text">
<input type="submit" value="Submit">
</form>
功能防止多个子项(事件){
if(this.hasClassName('allow-one-time-submit')){
此.removeClassName('allow-one-time-submit');
//不要停止这项活动
}否则{
警报(“您已提交”);
事件停止();
}
}
document.observe('dom:loaded',function()){
var forms=$A(document.getElementsByTagName('form');
表单。每个(函数(表单){
//将类名添加到加载的每个窗体中
form.addClassName('allow-one-time-submit');
形式。遵守(‘提交’、防止多个提交)
});
});
看起来很好(在Chrome和Firefox中)谢谢你的帖子。我不知道你提到的那个网站。我会试着依靠JSFIDLE找到线索。嗨,Artlung,谢谢你的提示。你的话是相关的,我会考虑的。但问题是我必须处理现有的代码,所以在我众多的表单中添加类名不是一个选项。啊,好吧,在加载时添加一个函数,将类名添加到每个表单中,这很容易。@1我继续添加代码,将类添加到每个表单中。
<script type="text/javascript">
function preventMultipleSubmits(event) {
if (this.hasClassName('allow-one-time-submit')) {
this.removeClassName('allow-one-time-submit');
// don't stop the event
} else {
alert('You already submitted');
event.stop();
}
}
document.observe('dom:loaded', function() {
var forms = $A(document.getElementsByTagName('form'));
forms.each(function(form) {
// add Class Name to each and every form on load
form.addClassName('allow-one-time-submit');
form.observe('submit', preventMultipleSubmits)
});
});
</script>
<form action="http://www.example.com/path/to/action" class="allow-one-time-submit">
<input type="text">
<input type="submit" value="Submit">
</form>