Question

任务很简单。我写了一个函数，期望从object（）的标识符和数组中替换字符串。

var replacer = function(original, replacement) {
     console.log(replacement)
        _.each(replacement, (value, key) => {
            original =  original.replace('${' + key+'}', value)
        });
        return original;    
}

console.clear();


var asString = "This is my email ${email} & ${mobile}";
var replacement = {"email":"abcd@yahoo.co.in", "mobile":"999999999"}
asString = replacer(asString, replacement);
console.log(asString) // Here i am getting it properly replaced


var replacement ={"email":"xyz@yahoo.co.in", "mobile":"0000000"}
asString2 = replacer(asString, replacement);
console.log(asString2) // Here i am still getting old value not new value

http://jsfiddle.net/1gc9xka8/

如果你检查更新一个， http://jsfiddle.net/1gc9xka8/1

我甚至改变了变量，但仍然得到旧值。

请告知这里有什么问题。

Answer 1

您正在传递替换的字符串而不是原始字符串

＆＃13;

var replacer = function(original, replacement) {
  console.log(replacement)
  _.each(replacement, (value, key) => {
    original = original.replace('${' + key + '}', value)
  });
  return original;
}

console.clear();
var asString = "This is my email ${email} & ${mobile}";
var replacement1 = {
  "email": "abcd@yahoo.co.in",
  "mobile": "999999999"
};
var asStringReplacement1 = replacer(asString, replacement1);
console.log(asStringReplacement1);
var replacement2 = {
  "email": "xyz@yahoo.co.in",
  "mobile": "0000000"
};
var asStringReplacement2 = replacer(asString, replacement2);
console.log(asStringReplacement2);

＆＃13;

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.min.js"></script>

＆＃13;

javascript替换函数不返回新值

1 个答案: