Question

我正在努力实现这样的目标。

点击特定的api命令（例如curl命令）后，我得到json响应。我需要将此结果转换为html。为此，我正在考虑将结果存储在环境变量中。我的意图是读取此变量，然后读取json数据。

如何在js中读取环境变量？

我正在使用以下程序将json映射到html表。

<!DOCTYPE html>
<html>
<head>
    <title>Convert JSON Data to HTML Table</title>
    <style>
        th, td, p, input {
            font:14px Verdana;
        }
        table, th, td 
        {
            border: solid 1px #DDD;
            border-collapse: collapse;
            padding: 2px 3px;
            text-align: center;
        }
        th {
            font-weight:bold;
        }
    </style>
</head>
<body>
    <input type="button" onclick="CreateTableFromJSON()" value="Create Table From JSON" />
    <p id="showData"></p>
</body>

<script>
    function CreateTableFromJSON() {

var myBooks = [
            {
                "Book ID": "1",
                "Book Name": "Computer Architecture",
                "Category": "Computers",
                "Price": "125.60"
            },
            {
                "Book ID": "2",
                "Book Name": "Asp.Net 4 Blue Book",
                "Category": "Programming",
                "Price": "56.00"
            },
            {
                "Book ID": "3",
                "Book Name": "Popular Science",
                "Category": "Science",
                "Price": "210.40"
            }
        ]

        // EXTRACT VALUE FOR HTML HEADER. 
        // ('Book ID', 'Book Name', 'Category' and 'Price')
        var col = [];
        for (var i = 0; i < myBooks.length; i++) {
            for (var key in myBooks[i]) {
                if (col.indexOf(key) === -1) {
                    col.push(key);
                }
            }
        }

        // CREATE DYNAMIC TABLE.
        var table = document.createElement("table");

        // CREATE HTML TABLE HEADER ROW USING THE EXTRACTED HEADERS ABOVE.

        var tr = table.insertRow(-1);                   // TABLE ROW.

        for (var i = 0; i < col.length; i++) {
            var th = document.createElement("th");      // TABLE HEADER.
            th.innerHTML = col[i];
            tr.appendChild(th);
        }

        // ADD JSON DATA TO THE TABLE AS ROWS.
        for (var i = 0; i < myBooks.length; i++) {

            tr = table.insertRow(-1);

            for (var j = 0; j < col.length; j++) {
                var tabCell = tr.insertCell(-1);
                tabCell.innerHTML = myBooks[i][col[j]];
            }
        }

        // FINALLY ADD THE NEWLY CREATED TABLE WITH JSON DATA TO A CONTAINER.
        var divContainer = document.getElementById("showData");
        divContainer.innerHTML = "";
        divContainer.appendChild(table);
    }
</script>
</html>

Answer 1

正如Quentin所说：您不能，但是请研究Local Storage。

Answer 2

JavaScript在HTML文档的客户端运行，根本无法访问环境变量。所以你不能。

在javascript中读取环境变量

2 个答案: