Question

I need to replace ${conferance name} with ABC, ${conference day} with Monday in the following sentence.
Could some one help me with the regex.

var text = "<td>${conference name}</td><td>${conference day}</td>"

var list = ["${conferance name}", "${conference day}" ]

for (var j = 1; j < list.length; j++) {
            //Extracting the col name
            var colName  =   list[j].split("${");
            colName = colName.split("}")[0];
            //Replacing the col name
            text = text.replace(new RegExp('\\$\\{' + colName + '\\}', 'g'), "ABC");

        }

The above code repalces fine if i have ${conference_name}, but it fails when i have a space in between.

The list is a dynamic array. And the Replace texts are also dynamic. I just simulated them as objects here for fitting them in the Regex Statement.

Thanks in Advance.

Answer 1

Here’s a version that lets you parameterize the replacements explicitly:

function doReplace(repl, str) {
  var regexStr = Object.keys(repl).map(function(s) {
    return s.replace(/([^\w\s])/g, '\\$1');
  }).join('|');
  return str.replace(new RegExp(regexStr, 'g'), function(m) {
    return repl[m];//it changed to "repl"  
  });
}

var replacements = {
  "${conference name}": "ABC",
  "${conference day}": "Monday"
};

doReplace(replacements, text) // => "<td>ABC</td><td>Monday</td>"