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JavaScript Operator: delete

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In JavaScript, the delete operator deletes a property from an object. For example, suppose:


var x = {name: "ten", val: 10, binaryval: "1010"}


This creates an object with three name/value pairs.


Then delete x.value (or delete x["val"]) would result in x becoming:


{name: "ten", binaryval: "1010"}


It is usually unwise to apply the delete operator to predefined JavaScript object properties, as otherwise the application can crash.


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