var common = {}; common.post_example = function post_example(key, value, callback) { var url = "/postexample"; data = new FormData(); data.append(key, value); return post(url, data, callback); } common.null_callback = function null_callback() { return; } common.post = function post(url, data, callback) { var request = new XMLHttpRequest(); request.answer = null; request.onreadystatechange = function() { if (request.readyState == 4) { var text = request.responseText; if (callback != null) { console.log(text); callback(JSON.parse(text)); } } }; var asynchronous = true; request.open("POST", url, asynchronous); request.send(data); } common.bind_box_to_button = function bind_box_to_button(box, button) { box.onkeydown=function() { if (event.keyCode == 13) { button.click(); } }; } common.entry_with_history_hook = function entry_with_history_hook(box, button) { //console.log(event.keyCode); if (box.entry_history === undefined) {box.entry_history = [];} if (box.entry_history_pos === undefined) {box.entry_history_pos = -1;} if (event.keyCode == 13) { /* Enter */ box.entry_history.push(box.value); button.click(); box.value = ""; } else if (event.keyCode == 38) { /* Up arrow */ if (box.entry_history.length == 0) {return} if (box.entry_history_pos == -1) { box.entry_history_pos = box.entry_history.length - 1; } else if (box.entry_history_pos > 0) { box.entry_history_pos -= 1; } box.value = box.entry_history[box.entry_history_pos]; } else if (event.keyCode == 27) { box.value = ""; } else { box.entry_history_pos = -1; } } common.init_atag_merge_params = function init_atag_merge_params() { var as = Array.from(document.getElementsByClassName("merge_params")); page_params = new URLSearchParams(window.location.search); as.forEach(function(a){ var a_params = new URLSearchParams(a.search); var new_params = new URLSearchParams(); page_params.forEach(function(value, key) {new_params.set(key, value); }); a_params.forEach(function(value, key) {new_params.set(key, value); }); a.search = new_params.toString(); a.classList.remove("merge_params"); }); } common.on_pageload = function on_pageload() { common.init_atag_merge_params(); } document.addEventListener("DOMContentLoaded", common.on_pageload);