3

我有一个JSON包含一堆数据的文件：

我的数据.JSON：

{
"Addresses": {
    "AddressList": [
        {
            "HouseNumber": 201,
            "Street": "Victoria Lane",
            "Postcode": "SW1 8ES"
        },
        {
            "HouseNumber": 10,
            "Street": "Allen Close",
            "Postcode": "NG2 3TD"
        },
        {
            "HouseNumber": 57,
            "Street": "Thomas Street",
            "Postcode": "DR12 6TE"
        },
        {
            "HouseNumber": 57,
            "Street": "Old Lister Street",
            "Postcode": "OL4 5TH"
        },
        {
            "HouseNumber": 45,
            "Street": "Milk Round Street",
            "Postcode": "MK6 4HG"
        },
        {
            "HouseNumber": 102,
            "Street": "Jersey Quarter Avenue",
            "Postcode": "DR12 6TE"
        },
        {
            "HouseNumber": 845,
            "Street": "MR HAPPY STREET",
            "Postcode": "MR3 0FJ"
        }
    ]
}

我试图显示div是否通过 indexOf 找到 Street 的返回值的匹配项

HTML：

<div ng-repeat="address in Addresses.AddressList">
    {{ address.HouseNumber }}, {{ address.Street}}, {{ address.Postcode }}
    <div ng-show="address.Street.toLowerCase().indexOf('MR HAPPY STREET') == 0">
        MR HAPPY STREET WAS FOUND
    </div>
    <div ng-show="address.Street.toLowerCase().indexOf('Milk Round Street') == 0">
        Milk Round Street WAS FOUND
    </div>
</div>

这似乎不起作用。您可以indexOf通过执行此操作ng-show吗？

4

3 回答 3

7

您的问题是您比较了 2 个不同的字符串：使用toLowerCase()函数后，您的字符串Milk Round Street看起来像milk round street. 所以indexOf()会回来-1。这就是为什么您需要比较 2 个小写字符串，例如：

<div ng-show="address.Street.toLowerCase().indexOf('mr happy street') == 0">

或者：

<div ng-show="address.Street.toLowerCase().indexOf(('MR HAPPY STREET').toLowerCase()) == 0">
于 2014-10-15T10:03:48.510 回答
1

用这个

<div ng-repeat="address in Addresses.AddressList">
    {{ address.HouseNumber }}, {{ address.Street}}, {{ address.Postcode }}
    <div ng-show="showByJs(address,'MR HAPPY STREET')">
        MR HAPPY STREET WAS FOUND
    </div>
    <div ng-show="showByJs(address,'Milk Round Street')">
        Milk Round Street WAS FOUND
    </div>
</div>

在控制器中写入

    $scope.showByJs=function(address, indexofWord){
    if (address.Street.toLowerCase().indexOf(indexofWord) == 0)
    {
       return true;
    }else
     {
       return false
}
    }
于 2014-10-15T09:57:38.940 回答
1

您需要使用小写的"MR HAPPY STREET"and进行检查，"Milk Round Street"因为您正在尝试与小写的. 进行比较address.Street。

<div ng-repeat="address in Addresses.AddressList">
    {{ address.HouseNumber }}, {{ address.Street}}, {{ address.Postcode }}
    <div ng-show="address.Street.toLowerCase().indexOf(('MR HAPPY STREET').toLowerCase()) == 0">
        MR HAPPY STREET WAS FOUND
    </div>
    <div ng-show="address.Street.toLowerCase().indexOf(('Milk Round Street').toLowerCase()) == 0">
        Milk Round Street WAS FOUND
    </div>
</div>
于 2014-10-15T09:58:08.627 回答