Javascript：令牌上的语法错误" delete"，StringLiteral？ [英] Javascript : Syntax error on token "delete", StringLiteral?

问题描述

    var TestFunction = function () {

        return {
           delete: function() { // line 1
                // do something
            }
        };
    }

在eclipse的第1行获得以下错误

Getting below error on line 1 in eclipse

    Syntax error on token "delete", StringLiteral 

当我将删除更改为delete1时，错误消失了。是删除保留关键字吗？

As i changed "delete" to "delete1" , error goes away . Is delete a reserved keyword ?

推荐答案

是， delete 是一个保留关键字，用于删除某个属性对象，因此它不再可迭代。因此，给定：

Yes, delete is a reserved keyword, used to remove a property in an object, so that it is not iterable anymore. Thus, given:

var a = { b: 5 };
delete a.b;
console.log(a);
// logs {}

它还可以用于删除全局变量实际上也是全局对象的属性，即：

It can be also used to remove "global variables" that are actually properties of the global object too, that is:

delete a;
// is in browsers equal to
delete window.a;

请注意，您可以使用 delete 作为属性名称，但是你需要总是引用它：

Notice that you can use delete as a property name too, however you need to always quote it:

var obj = {
    'delete': function() { // line 1
        // do something
    }
};
obj['delete']();

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