Question

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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

Answer 1

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)