$ .post只能使用警报 [英] $.post work only with alert

问题描述

 函数post（）{
 var cvs = $ （ '＃客户-NBR'）VAL（）; 
 var cs = $（'＃cs'）。val（）; $ .post（'a.php'{postcvs：cvs，postch1：cs}）; 
 alert（功能工作）; 
} 
  

和这样的html表单：

 < form action =b.phpmethod =postonsubmit =return post（）> 
  

问题是当我从函数中删除警告$ .post不起作用时：

  function post（）{
 var cvs = $（'＃client-nbr'）。val（）; 
 var cs = $（'＃cs'）。val（）; $ .post（'a.php'{postcvs：cvs，postch1：cs}）; 
} 
  

请帮忙：）

解决方案

由于 post（）没有 return 语句， onsubmit 函数最终返回 undefined 。

由于它不返回 false ，它不会取消表单的正常行为。因此，表单在Ajax请求解决之前提交并卸载页面。

放入警报会延迟页面直到您点击确定，这会给Ajax请求解决时间。

return false post 函数来取消表单的正常提交。

When i call function with alert is working parfectly :

function post() {
    var cvs = $('#client-nbr').val();
    var cs = $('#cs').val(); $.post('a.php' {postcvs:cvs,postch1:cs});
    alert("The function work");
}

And the html form like this :

<form action="b.php" method="post" onsubmit="return post()">

The problem is when i remove alert from function the $.post doesnt work :

function post() {
    var cvs = $('#client-nbr').val();
    var cs = $('#cs').val(); $.post('a.php' {postcvs:cvs,postch1:cs});
}

Pls help :)

解决方案

Since post() doesn't have a return statement, the onsubmit function ends up returning undefined.

Since it doesn't return false, it doesn't cancel the normal behaviour of the form. Consequently, the form submits and unloads the page before the Ajax request resolves.

Putting in an alert delays the page unload until you click OK, which gives time for the Ajax request to resolve.

return false from the post function to cancel the normal submission of the form instead.

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