JavaScript花样替换遍历数组

Question

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如何把"lawitems"里面键相对应的值合并到"content"里面，另外遍历的时候还要去掉#号以及#号后面的，号

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Answer 1

var arr = {
    content: "你好#D12345#,hello#D321#world",
    lawitems: {
        "D12345": "aaaa",
        "D321": "bbbbb"
    }
}

arr.content = arr.content.replace(/#([^#]+)#/g, function (match, $1) {
    return arr.lawitems[$1]||match;//没有在lawitems找到返回原字符串
})

Answer 2

var reg = /#(Dd+)#/g;//正则写的不是很规范，如果你的编号是你给出的DEMO那样，还是可以用的
answer.content = answer.content.replace(reg,function($1,$2){return answer.lawitems[$2];})