如何从数据属性获取数据密钥名称？(How to get data key name from data attribute?)

如何从数据属性获取数据密钥名称？(How to get data key name from data attribute?)

我想从我的HTML元素获取关键名称？

示例代码：

<td data-code="123">220</td>

使用jquery数据方法我能够键值，但我想提取键名？

var keyValue=$("td").data("code"); //123 var keyName=?????

I want to get key name from my html element?

Sample code :

<td data-code="123">220</td>

Using jquery data method I am able to key value but I want to extract key name?

var keyValue=$("td").data("code"); //123 var keyName=?????

最满意答案

数据代码将是关键。

如果你想获得未知键/值对的键，你可以使用for (var key in data) {}循环：

var all_values = [], data = $('td').data(); for (var key in data) { all_values.push([key, data[key]]); } //you can now access the key/value pairs as an array of an array //if $(td).data() returns: `{code : 123}` then this code would return: [ [code, 123] ] //you could get the first key with: all_values[0][0] and its corresponding value: all_values[0][1]

data-code would be the key for that.

If you want to get the keys for unknown key/value pairs you can use a for (var key in data) {} loop:

var all_values = [], data = $('td').data(); for (var key in data) { all_values.push([key, data[key]]); } //you can now access the key/value pairs as an array of an array //if $(td).data() returns: `{code : 123}` then this code would return: [ [code, 123] ] //you could get the first key with: all_values[0][0] and its corresponding value: all_values[0][1]