正则表达式替换其中包含代码的字符串

Question

此字符串

"START";var settings ={"dev":false,"production":"n","id":"bcdef","key":"1234xyz","secret":"22sdfas"}
; return { getSettings: function(setting) { if (settings[setting]) { return settings[setting]; } return null; } };"END"

如何用正则表达式替换它成为这个

"START";var __REPLACED = console.log('replaced');"END"

Answer 1

我为你的目的写了这个函数：

/**
 * This function assumes string as a argument and
 * replaces everything  between "START" and "END"
 * with "START";var __REPLACED = console.log('replaced');"END"
 * @param input string
 * @author Georgi Naumov
 * gonaumov@gmail.com for contacts and
 * suggestions.
 */
function replaceString(input) {
    var re = /^("START")(?:(?:(?!"END")[\s\S])+)("END")$/g;
    return input.replace(re, function (match, p1, p2) {
        return p1 + ";var __REPLACED = console.log('replaced');" + p2;
    });
}

这里可以看到单元测试，它检查功能：

http://gonaumov.github.io/stringReplacer/