replace function help

[talha]

Hello!

Plz help me, i want to use the replace function by passing variable parameters e.g.

str1="abcdefg";
str2="ab";

str1.replace("str1"i, str2);


i have tried this but it doesnt work because the first parameter should be RegExp. I dont know how to get RegExp of str1 and then pass it as a parameter in replace function. plz help

[Ayşe]

If I understand:

  
<script type="text/javascript">

var str1="abcdefg";

var str2="ab";

var t= str1.replace(str1, str2);

alert(t); // ab

// or

var re= RegExp(str1,"i");

var n= str1.replace(re, str2);

alert(n);  // ab

</script>

Or

  
<script type="text/javascript">

RegExp.prototype.talha=function(str2){

return str2.replace(this,str2);

}

var str1="abcdefg";

var str2="ab";

var re= RegExp(str1,"i");

var s= re.talha(str2);

alert(s);  // ab

</script>

[Ayşe]

My code has an error.
It will be like this:

  
<script type="text/javascript">

RegExp.prototype.talha=function(str1, str2){

return str1.replace(this,str2);

}

var str1="abcdefg";

var str2="ab";

var re= RegExp(str1,"i");

var s= re.talha(str1, str2);

alert(s);  // ab

</script>

LeeU,

Koddaki hatalarımı farkettiğim zaman, yeni mesaj göndermek yerine, mesajımı düzeltmek istiyorum.

When I noticed my error in my code, I want to edit my message instead of sending a new message.

[rpgfan3233]

Why are you using prototype, Ayşe? LOL

You would need to create a new RegExp object:

var str1 = "bacdefg", findStr = "ba", replaceStr = "ab";
str1.replace(new RegExp(findStr, "i"), replaceStr);

or to be a bit more verbose and clear:

var str1 = "bacdefg";
var findStr = "ba";
var replaceStr = "ab";
var findExp = new RegExp(findStr, "i");
str1.replace(findExp, replaceStr);

You might consider checking out W3Schools' JavaScript tutorial, along with their JavaScript reference.

[Ayşe]

You would need to create a new RegExp object:

var str1 = "bacdefg", findStr = "ba", replaceStr = "ab";
str1.replace(new RegExp(findStr, "i"), replaceStr);

or to be a bit more verbose and clear:

var str1 = "bacdefg";
var findStr = "ba";
var replaceStr = "ab";
var findExp = new RegExp(findStr, "i");
str1.replace(findExp, replaceStr);

You might consider checking out W3Schools' JavaScript tutorial, along with their JavaScript reference.

rpgfan,
thanks for the codes and links.