Question

I have a question about splitting string in javascript. I’m getting a string from somewhere else and I want to get only a part of it. I can’t use substr because its length can be altered. I also looked at split method, but it is not enough also. For example, one of my strings looks like this:

<img src="http://image.weather.com/web/common/wxicons/31/30.gif?12122006" alt="" />Partly Cloudy, and 84 &deg; F. For more details?

I only want to get img tag and the number 84. Any suggestion? Thanks

Answer 1

This is where one should use regular expressions.

You can do something like:

var inputStr = '<img src="http://image.weather.com/web/common/wxicons/31/30.gif?12122006" alt="" />Partly Cloudy, and 84 &deg; F. For more details?';
var regex = /<img.*?src="(.*?)".*?>.*?([0-9]+\s*&deg;\s*[CF])/;
var results = regex.exec(inputStr);

results[1]; // => "http://image.weather.com/web/common/wxicons/31/30.gif?12122006"
results[2]; // => "84 &deg; F"

See a working example using this code:

http://jsfiddle.net/epkcn/