84 lines
1.8 KiB
JavaScript
84 lines
1.8 KiB
JavaScript
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function post_example(key, value, callback)
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{
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var url = "/postexample";
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data = new FormData();
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data.append(key, value);
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return post(url, data, callback);
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}
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function null_callback()
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{
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return;
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}
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function post(url, data, callback)
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{
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var request = new XMLHttpRequest();
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request.answer = null;
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request.onreadystatechange = function()
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{
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if (request.readyState == 4)
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{
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var text = request.responseText;
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if (callback != null)
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{
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console.log(text);
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callback(JSON.parse(text));
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}
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}
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};
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var asynchronous = true;
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request.open("POST", url, asynchronous);
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request.send(data);
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}
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function bind_box_to_button(box, button)
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{
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box.onkeydown=function()
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{
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if (event.keyCode == 13)
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{
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button.click();
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}
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};
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}
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function entry_with_history_hook(box, button)
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{
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//console.log(event.keyCode);
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if (box.entry_history === undefined)
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{box.entry_history = [];}
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if (box.entry_history_pos === undefined)
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{box.entry_history_pos = -1;}
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if (event.keyCode == 13)
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{
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/* Enter */
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box.entry_history.push(box.value);
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button.click();
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box.value = "";
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}
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else if (event.keyCode == 38)
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{
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/* Up arrow */
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if (box.entry_history.length == 0)
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{return}
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if (box.entry_history_pos == -1)
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{
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box.entry_history_pos = box.entry_history.length - 1;
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}
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else if (box.entry_history_pos > 0)
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{
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box.entry_history_pos -= 1;
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}
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box.value = box.entry_history[box.entry_history_pos];
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}
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else if (event.keyCode == 27)
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{
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box.value = "";
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}
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else
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{
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box.entry_history_pos = -1;
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}
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}
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