How can i replace text inside variable with jquery or javascript

Question

Possible Duplicate:
Why does javascript replace only first instance when using replace?

I have this variable

var newRow = "<td><div> [[myvar]]</div> <div> [[myvar]]</div> </td> "

When i do this

newRow  = newRow.replace('[[myvar]]', '10');

Only first occurance gets replaced and not the second

See [this][1] answer. That is almost the same question. [1]: http://stackoverflow.com/questions/1967119/why-does-javascript-replace-only-first-instance-when-using-replace — David, Oct 11 '12 at 08:13

Denys Séguret · Accepted Answer · 2012-10-11T08:33:30.927

9

You might use a regular expression

newRow  = newRow.replace(/\[\[myvar\]\]/g, '10');

There is no other simple solution for multiple replacements. Note that :

regex are heavily optimised on all browsers, especially if using the /\[\[myvar\]\]/ notation
if your pattern is dynamic you may use new RegExp(somepattern, 'g') (but for better performances don't use this if you have a fixed pattern)

edited Oct 11 '12 at 08:33

answered Oct 11 '12 at 08:13

Denys Séguret

i don't understood , if i have exact match , why do i need to have regex. i mean function replace is same why regex works but not simple string – Mirage Oct 11 '12 at 08:18
In Javascript the replace function is actually based on regex. By default the replace hits only the first occurrance. The `g` flag set the global match option. – Alberto De Caro Oct 11 '12 at 08:21
thanks buddy. i don't know when i see regex , i heart starts pumping faster like i saw tiger in front of me – Mirage Oct 11 '12 at 08:22

score 0 · Answer 2 · answered Oct 11 '12 at 08:14

0

Use this:

newRow = newRow.replace(new RegExp('[[myvar]]', 'g'), '10');

answered Oct 11 '12 at 08:14

techfoobar

2 Answers2