如何将if语句添加到对象块中

How to add if statements to an object block

本文关键字：对象添加语句 if 更新时间：2023-09-26

这个脚本可以工作，并且是一个构造上下文菜单的示例脚本。但我需要它根据点击的内容来构建不同的内容。如何将if语句应用于列表中的每个项，例如，如果满足条件，则隐藏'edit'项，等等。

    $(function(){
    $.contextMenu({
        selector: '.context-menu-one', 
        build: function($trigger, e) {
            return {
                items: 
                {
                    "edit": 
                    {
                        name: "Edit",
                        icon: "edit",
                        callback: function(key, options) 
                        {
                            // some code to perform
                        }
                    },
                    "cut": {name: "Cut", icon: "cut"},
                    "copy": {name: "Copy", icon: "copy"},
                    "paste": {name: "Paste", icon: "paste"},
                    "delete": {name: "Delete", icon: "delete"},
                    "sep1": "---------",
                    "quit": {name: "Quit", icon: "quit"}
                }   
            };
        }
    });
});

使用IIFE

var foo = {
  bar: {
    baz: (function() {
      // some code here
      return "value";
    })()
  }
};
foo.bar.baz // => "value"

你可以构造item对象然后返回它:

$.contextMenu({
    selector: '.context-menu-one',
    build: function ($trigger, e) {
        var items = {
            "cut": {name: "Cut", icon: "cut"},
            "copy": {name: "Copy", icon: "copy"},
            "paste": {name: "Paste", icon: "paste"},
            "delete": {name: "Delete", icon: "delete"},
            "sep1": "---------",
            "quit": {name: "Quit", icon: "quit"}
        };
        if (someCondition) {
            items.edit = {
                name: "Edit",
                icon: "edit",
                callback: function(key, options) {
                    // some code to perform
                }
            };
        }
        return {items: items};
    }
});

这样，您可以在返回项之前定义一些属性。