只是对我的代码的一部分做了一个非常简短的解释:
我在做什么: 我正在尝试检查用户点击了哪个按钮,以便执行相应的代码。
我一直在四处看看,我到处都是,人们建议使用isset(),但这对我不起作用。也许我不完全理解isset()的作用,但是它基本上不检查是否设置了变量?
这是我的代码:
<script>
function show(x, y){
<!-- Do something -->
}
</script>
<form>
<button name = "sButton" type = "button" onclick = 'show("searchForm", "insertForm");'>Perform Search</button>
<button name = "iButton" type = "button" onclick = 'show("insertForm", "searchForm");'>Insert Data</button>
</form>
<form id = "searchForm" value "search" style = "display: none;" action = "test2.php" method = "post">
<!-- Do something -->
</form>
<form id = "insertForm" style = "display: none;" action = "test2.php" method = "post">
<!-- Do something -->
</form>
<!-- This is the test2.php page -->
if(isset($_POST['sButton'])){
<!-- Do something -->
}
else{
<!-- Do something -->
}
为了测试它,我让if语句打印“Checked”,而else打印“Not checked”。当我运行我的代码时,它会打印“未选中”。我做错了什么,我该怎么办?
提前致谢!
答案 0 :(得分:1)
您没有将按钮sButton
或iButton
传递给test2.php,因为您的第二个和第三个表单没有将它们作为输入。仅提交每个特定表单内的输入。并且只有按钮调用JS函数时,具有按钮的表单才有动作。
我建议你做的是为你提交给test2.php的每个表单添加隐藏字段,如下所示:
<form id = "searchForm" value "search" style = "display: none;" action = "test2.php" method = "post">
<input type="hidden" name = "sButton" value="sButton" />
<!-- Do something -->
</form>
<form id = "insertForm" style = "display: none;" action = "test2.php" method = "post">
<input type="hidden" name = "iButton" value="iButton" />
<!-- Do something -->
</form>
这样你的test2.php就可以了。
答案 1 :(得分:1)
添加
<input type="hidden" name="sButton" />
进入搜索表单,然后是
<input type="hidden" name="iButton" />
进入插入表单。
之后。您需要在show(...)javascript函数
中提交(选定)表单答案 2 :(得分:1)
使用this:
onclick = 'show(this.name, "searchForm", "insertForm");'
示例:
<button name = "sButton" type = "button" onclick = 'show(this.name, "searchForm", "insertForm");'>Perform Search</button>
function show(name, x, y){
alert(name);
if(name === "sButton"){
do this....
}
}
输出:
sButton
样本
答案 3 :(得分:1)
我不确定你要做什么,但我根本不知道为什么这些按钮处于一种形式。考虑动态附加侦听器,向按钮添加名称或ID,以便您可以分辨哪个被单击,然后根据单击的内容隐藏或显示表单:
// The buttons don't seem to need to be in a form, so use some other
// container so you don't need to worry about a useless form being
// submitted
<div id="buttonContainer">
<button id="searchButton">Perform search</button>
<button id="insertButton">Insert data</button>
</div>
// Forms for testing
<form id="searchForm"><input value="search"></form>
<form id="insertForm"><input value="insert"></form>
和代码:
<script>
// Hide and show forms depending on which button was clicked using the
// button's ID
function showForm(event) {
// If the search button was clicked, show the search form and hide the
// input form
if (/search/.test(this.id)) {
document.getElementById('searchForm').style.display = '';
document.getElementById('insertForm').style.display = 'none';
// If the insert button was clicked, do the opposite
} else {
document.getElementById('searchForm').style.display = 'none';
document.getElementById('insertForm').style.display = '';
}
}
// Attach listeners to the buttons
window.onload = function() {
Array.prototype.forEach.call(document.querySelectorAll('#searchButton, #insertButton'),
function(button) {
button.addEventListener('click', showForm, false);
}
);
// Hide the forms
Array.prototype.forEach.call(document.querySelectorAll('#searchForm, #insertForm'),
function(form) {
form.style.display = 'none';
}
);
}
</script>