在使用 Storage 进行存取操作的同时,如果需要对存取操作进行监听,可以使用 HTML5 Web Storage api 内置的事件监听器对数据进行监控。只要 Storage 存储的数据有任何变动,Storage 监听器都能捕获。interface Storage : Event{
readonly attribute DOMString key;
readonly attribute DOMString? oldValue;
readonly attribute DOMString? newValue;
readonly attribute DOMString url;
readonly attribute Storage? storageArea;
void initStorageEvent(in DOMString typeArg,
in boolean canBubbleArg,
in boolean cancelableArg,
in DOMString keyArg,
in DOMString oldValueArg,
in DOMString newValueArg,
in DOMString urlArg,
...
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