small-packages/luci-app-passwall/luasrc/view/passwall/node_config/header.htm

<%
local api = self.api
-%>
<script type="text/javascript">
	//<![CDATA[
	let node_id = "<%=self.section%>";
	let node_config_url = '<%=api.url("node_config")%>/' + node_id;

	function waitForElement(selector, callback) {
		const el = document.querySelector(selector);
		if (el) return callback(el);
		const observer = new MutationObserver(() => {
			const el = document.querySelector(selector);
			if (el) {
				observer.disconnect();
				callback(el);
			}
		});
		observer.observe(document.body, { childList: true, subtree: true });
	}

	function getOption(opt) {
		var obj;
		var id = 'cbid.<%=api.appname%>.' + node_id + '.' + opt;
		obj = document.getElementsByName(id)[0] || document.getElementById(id);
		if (obj) {
			var combobox = document.getElementById('cbi.combobox.' + id);
			if (combobox) {
				obj.combobox = combobox;
			}
			var div = document.getElementById(id);
			if (div && div.getElementsByTagName("li").length > 0) {
				obj = div;
			}
			return obj;
		} else {
			return null;
		}
	}
	
	function update_node(data) {
		XHR.get('<%=api.url("update_node")%>', {
			id: node_id,
			data: JSON.stringify(data)
		},
		function(x, data) {
			if (x && x.status == 200 && data.code == 1) {
				window.location.href = node_config_url;
			}
			else {
				alert("<%:Error%>");
			}
		});
	}

	function fetchCertSha256(el) {
		if (el.getAttribute("data-loading") === "1") return;
		el.setAttribute("data-loading", "1");
		el.style.pointerEvents = "none";
		el.style.color = "red";
		XHR.get('<%=api.url("fetch_certsha256")%>', { id: node_id }, function(x, res) {
			el.setAttribute("data-loading", "0");
			el.style.pointerEvents = "";
			el.style.color = "";
			if (!x || x.status !== 200) {
				alert("<%:Error%>");
				return;
			}
			if (!res || res.code !== 1 || !res.data) {
				alert(res && res.msg ? res.msg : "<%:Fetch Failed%> !");
				return;
			}
			const inputs = document.querySelectorAll('input[id$=".xray_tls_pinSHA256"]');
			inputs.forEach(function(input) {
				input.value = res.data;
			});
		});
	}
	//]]>
</script>