原生 Javascript 版本的 AJAX
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Vanilla Javascript version of AJAX
提问by John
How can I remove the need to download a full jquery library when all I want to use is AJAX. Is there a smaller file that focuses on AJAX or is there a Vanilla Javascript version of this code?
当我只想使用 AJAX 时，如何消除下载完整 jquery 库的需要。是否有专注于 AJAX 的较小文件，或者是否有此代码的 Vanilla Javascript 版本？
<script type="text/javascript">
$(document).ready(function(){
$("button").click(function(){
$.ajax({
type: 'POST',
url: 'cookies.php',
success: function(data) {
alert(data);
}
});
});
});
</script>
采纳答案by Always Sunny
You can try with XMLHttpRequestlike below.
您可以尝试使用如下所示的XMLHttpRequest。
<!DOCTYPE html>
<html>
<body>
<h2>The XMLHttpRequest Object</h2>
<button type="button" onclick="loadDoc()">Request data</button>
<p id="demo"></p>
<script>
function loadDoc() {
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
document.getElementById("demo").innerHTML = this.responseText;
}
};
xhttp.open("POST", "cookies.php", true);
xhttp.send();
}
</script>
</body>
</html>
Demo:https://www.w3schools.com/js/tryit.asp?filename=tryjs_ajax_first
演示：https : //www.w3schools.com/js/tryit.asp?filename=tryjs_ajax_first
Reference:https://www.w3schools.com/js/js_ajax_http_send.asp
回答by Gustavo Topete
回答by Always Sunny
you can use build in fetch module for example
例如，您可以使用内置 fetch 模块
fetch('http://yourapi.com/data')
.then(response => {
console.log(response)
});
