老叶
36 lines
781 B
JavaScript
36 lines
781 B
JavaScript
var events = {};
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function on(name, self, callback) {
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var tuple = [self, callback];
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var callbacks = events[name];
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if (Array.isArray(callbacks)) {
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callbacks.push(tuple);
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}
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else {
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events[name] = [tuple];
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}
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}
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function remove(name, self) {
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var callbacks = events[name];
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if (Array.isArray(callbacks)) {
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events[name] = callbacks.filter((tuple) => {
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return tuple[0] != self;
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})
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}
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}
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function emit(name, data) {
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var callbacks = events[name];
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if (Array.isArray(callbacks)) {
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callbacks.map((tuple) => {
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var self = tuple[0];
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var callback = tuple[1];
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callback.call(self, data);
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})
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}
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}
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exports.on = on;
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exports.remove = remove;
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exports.emit = emit; |