1、從JavaScript對象中移除/刪除一個屬性javascript
1.deletehtml
var myObject = { "ircEvent": "PRIVMSG", "method": "newURI", "regex": "^http://.*" }; // 方法一 delete myObject.regex; // 方法二 delete myObject['regex']; // 方法三 var prop = "regex"; delete myObject[prop]; console.log(myObject);
2.undefinedjava
var obj = { field: 1 }; obj.field = undefined; //object.field === undefined
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