Question

I have a text field have value http://localhost/Send/test.php?s/?a=1&o=2. Another three text boxes. If we enter three values the above url will change like http://localhost/Send/test.php?s/?a=1&o=2&s1=a&s2=b&s3=c . The value for s1,s2 and s3 will not save anywhere. My question is how we check is the value for s1 is already set? And how can I update the value of s1 if iI change the textbox value for s1

Answer 1

You can replace using this regex

url.replace(/&s1=([^$]+|[^&]+)/i, "&s1=newvalue");