Question

问题是：在更新db之前运行确认用户请求。有两种选择：点击时使用submitfunc我可以运行js确认，获得用户选择，但在upload_db功能中，我无法捕捉用户输入的值（它是＆＃39; s textarea值）如果我使用button type="submit...我可以获得textarea值，但我不知道如何运行确认并在更新db之前获得确认返回值。我该如何解决这个问题？

<?php
session_start();
// In case user press button_lookfor
if (isset($_POST['button_lookfor'])) {
    // I run sql select...
}
//  In case user press button_update
if (isset($_POST['button_update'])) {
    //to update db i have to get value of textarea.Ok in this case
    $sql_upd = "UPDATE db SET field_value ='" .$_POST['alpha_9_10']."'";
}

function upload_db(){
    //I am not able to catch the value entered in textarea
    if (isset($_POST['alpha_9_10'])) {
        //....
    }
}
?>
<html>
<head>
<script language="javascript" type="text/javascript">
function submitFunc(){
    var r = confirm("Press OK per confermare la modifica al database!");
    if (r == true) {
        var x="<?php upload_db(); ?>";
        alert(x);
        return false;
    }
}
</script>
</head>
</style>
<body>

<form method="post" action="" >
<table class='table1' id="pos_table1" >
    <tr><td><textarea name="alpha_9_10"<textarea></td></tr>
</table>

<button type="submit" name="button_lookfor" >Look for data</button>
<button type="submit name="button_update" >Save data</button>
<!--<button type="button" onClick="submitFunc();"name="button_update">Save</button>-->

</body>
</form>
</html>

Answer 1

您可以尝试返回确认值（当用户点击按钮时为true或false）。只有在用户按下确定时才会提交表单。这看起来像是：

<?php
session_start();
// In case user press button_lookfor
if (isset($_POST['button_lookfor'])) {
    // I run sql select...
}
//  In case user press button_update
if (isset($_POST['button_update'])) {
    //to update db i have to get value of textarea.Ok in this case
    $sql_upd = "UPDATE db SET field_value ='" .$_POST['alpha_9_10']."'";
}

function upload_db(){
    //I am not able to catch the value entered in textarea
    if (isset($_POST['alpha_9_10'])) {
        //....
    }
}
?>
<html>
<head>

</head>
</style>
<body>

<form method="post" action="" >
<table class='table1' id="pos_table1" >
    <tr><td><textarea name="alpha_9_10"<textarea></td></tr>
</table>

<button type="submit onClick="return confirm('Press OK per confermare la modifica al database!')" name="button_update" >Save data</button>


</body>
</form>
</html>

用户在更新db

1 个答案: