[英]Calling a php function and redirecting on button click
我有一個php函數,其中正在創建一些pdf。 我有一個按鈕,我想在按鈕單擊時調用該函數,然后重定向到URL。 最簡單的方法是什么?
如果您需要調用PHP方法,則可以使用AJAX。 像這樣:
var btn = document.getElementById("button_id");
btn.onclick = function () {
// Make AJAX request
// On success, do this:
window.location.href = "url to redirect to";
};
可以輕松地搜索“發出AJAX請求”的代碼,我將在一分鍾內提供它:)
更新:
function ajaxFunction() {
var ajaxRequest; // The variable that makes Ajax possible!
try {
// Firefox, Chrome, Opera 8.0+, Safari
ajaxRequest = new XMLHttpRequest();
} catch (e) {
// Internet Explorer Browsers
try {
ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e) {
try {
ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP.6.0");
} catch (e) {
try {
ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP.3.0");
} catch (e) {
throw new Error("This browser does not support XMLHttpRequest.");
}
}
}
}
}
return ajaxRequest;
}
AJAX代碼-
var req = ajaxFunction();
req.onreadystatechange = function (response) {
if (response.status == 200 && response.readyState == 4) {
window.location.href = "url to redirect to";
}
}
req.open("POST", "your PHP file's URL", true);
req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
req.send(null); // Or send any `key=value&` pairs as a string
有多種方法可以實現此目的。 我會在ajax中調用PHP函數,並根據函數的返回值進行重定向。 以下示例使用jQuery:
jQuery的:
$.ajax({
url: 'createpdf.php',
success: function(data) {
if (data) window.location = 'link/to/new/path';
}
});
PHP:
function create_pdf(){
//Create PDF
//If PDF was created successfully, return true
return true;
}
<form name="input" action="whatever.php" method="get">
...
<input type="submit" value="Submit">
</form>
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.