linq-js-docs/src/resources/zh-cn/apis/IEnumerable/methods/firstOrDefault.json

use linq and lamdba in javascript

{
    "histroys": [
        {
            "since": "2.1.15",
            "overloads": [
                {
                    "parameters": [
                        {
                            "name": "defaultValue",
                            "types": [
                                "any"
                            ],
                            "descriptions": [
                                "找不到匹配元素时返回的默认值"
                            ]
                        },
                        {
                            "name": "predicate",
                            "types": [
                                "function",
                                "string",
                                "symbol",
                                "number"
                            ],
                            "descriptions": [
                                "用于检测每个元素是否满足条件的函数"
                            ],
                            "defaultValue": "defaultPredicate",
                            "declare": {
                                "returns": {
                                    "type": "boolean"
                                },
                                "parameters": [
                                    {
                                        "name": "element",
                                        "types": [
                                            "any"
                                        ]
                                    },
                                    {
                                        "name": "index",
                                        "types": [
                                            "number"
                                        ]
                                    }
                                ]
                            }
                        }
                    ],
                    "returns": {
                        "type": "any",
                        "descriptions": [
                            "序列中通过指定函数检测的第一个元素. 如果未找到匹配元素, 则返回 defaultValue"
                        ]
                    },
                    "description": "返回序列中满足条件的第一个元素. 如果未找到这样的元素, 则返回默认值",
                    "sees": [
                        {
                            "apis": "IEnumerable",
                            "method": "first"
                        },
                        {
                            "apis": "Enumerable.predicates",
                            "property": "default"
                        },
                        {
                            "href": "https://msdn.microsoft.com/{language}/library/bb549039(v=vs.110).aspx",
                            "title": "Microsoft MSDN"
                        }
                    ]
                }
            ]
        },
        {
            "since": "2.1.17",
            "ref": true,
            "overloads": [
                {
                    "parameters": [
                        { },
                        {
                            "types": [
                                "function",
                                "string",
                                "symbol",
                                "number",
                                "array",
                                "object"
                            ]
                        }
                    ]
                }
            ]
        }
    ]
}