javascript Javascript删除一个对象键数组值
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Javascript delete an object key array value
提问by itsme
I have this object:
我有这个对象：
object = {
key:["1","2","3","4","5"],
key2:["5","7","8","9"]
}
How do I delete an object key and how to delete an object key value ?
如何删除对象键以及如何删除对象键值？
回答by Jamiec
For deleteing a property from an object you can use
要从对象中删除属性，您可以使用
delete object.key
For deleting an item from the array, you could use many methods, one of which is to make use of jQuery's grepmethod:
要从数组中删除项目，可以使用多种方法，其中一种方法是使用 jQuery 的grep方法：
// removes "5" from the values
object.key2 = $.grep(object.key2,function(x) { return x != "5"});
Live examples: http://jsfiddle.net/rbREb/
现场示例：http: //jsfiddle.net/rbREb/
回答by alex
How do I delete an object key and how to delete an object key value ?
如何删除对象键以及如何删除对象键值？
Use the deleteoperator to remove a property from an Object.
使用delete运算符从Object.
delete object.key
Removing the property will remove its associated value (or at least mark it for garbage collection).
删除该属性将删除其关联的值（或至少将其标记为垃圾收集）。
回答by Lesta Crenay
you can use delete object[key]. This will delete both the key and value
您可以使用删除对象[key]。这将删除键和值
