javascript - 如何对字符串化的 JavaScript 进行去字符串化？

Question

如何对已字符串化的 JavaScript 代码进行“去字符串化”？ JSON.parse 似乎不起作用。我们希望将 JavaScript 代码存储在数据库中，然后检索它并对其进行评估。这是数据库中的代码:

//# sourceURL=journal.js

function onBlur(e) {

    var drAmount = script.getGridRowFieldValue('debitamount', e.rowuid)
    var crAmount = script.getGridRowFieldValue('creditamount', e.rowuid);

    // Prevent both debit and credit from having values.      
    if (drAmount != undefined && crAmount != undefined) {

        if (e.fieldname == 'debitamount') {
            script.setGridRowFieldValue('creditamount', e, undefined)
        } else if (e.fieldname == 'creditamount') {
            script.setGridRowFieldValue('debitamount', e, undefined)
        }

    }
}

这是返回的内容:

"//# sourceURL=journal.js\r\n\r\nexport function onBlur(e) {\r\n\r\n var drAmount = script.getGridRowFieldValue('debitamount', e.rowuid)\r\n var crAmount = script.getGridRowFieldValue('creditamount', e.rowuid);\r\n\r\n // Prevent both debit and credit from having values. \r\n if (drAmount != undefined && crAmount != undefined) {\r\n\r\n if (e.fieldname == 'debitamount') {\r\n script.setGridRowFieldValue('creditamount', e, undefined)\r\n } else if (e.fieldname == 'creditamount') {\r\n script.setGridRowFieldValue('debitamount', e, undefined)\r\n }\r\n\r\n }\r\n}\r\n\r\n\r\n\r\n\r\n"

Answer 1

参见eval 。它接受一个字符串作为参数，您只需将该字符串传递给它就可以了。

此外，请阅读并理解其他人提到的警告以及我链接到的文档中的警告。