Question

how can I replace strings in ASP.NET hidden field using JavaScript?

var s = document.getElementById('HF').value;

where HF is my hidden field, I want to replace some strings in HF value, but s doesn’t display replace function, should I convert s to ToString?

thanks

Answer 1

You mean this?

var s = document.getElementById('HF').value;
document.getElementById('HF').value = s.replace(/oldstring/g, "newstring");

Live example: http://jsfiddle.net/2tzGH/