window屬性：onrejectionhandled

onrejectionhandled屬性

該Window.onrejectionhandled屬性是處理rejectionhandled事件的事件處理程序，當(dāng)Promises被拒絕時(shí)引發(fā)。

onrejectionhandled屬性語(yǔ)法

window.addEventListener("rejectionhandled", function(event) { ... });
window.onrejectionhandled = function(event) { ...};

onrejectionhandled屬性示例

window.onrejectionhandled = function(e) {
  console.log(e.reason);
}

規(guī)范

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