Getting String from a Javascript Function

Question

I'm currently trying to capture the image URL within this Javascript call below, I'm struggling to get my head around the code.

<a href="javascript:fnChangeImage('.ItemImage.Main','http://www.forever21.com/images/5_detail_750/00185472-01.jpg');">

I have the following code fetching the title, price etc perfectly but I'm not too sure how to grab something from a javascript call.

var result = {
    productName: $(".pdp_title .item_name_p").text().trim(),
    description: $(".d_content span").text().trim(),
    price: $(".pdp_title .price_p").text(),
    imageUrls: []
};

@mplungjan I think he doesn't care, it seems like he is trying to scrape some data and he is interested in the image url passed to the function — dlock
– dlock, Commented May 4, 2016 at 9:09

dlock · Accepted Answer · 2016-05-04 09:05:46Z

3

Here is a one liner

var imageUrl = /.*,'(.+)'/.exec($("a[href^='javascript:fnChangeImage']").attr("href"))[1];

How it works

Select the dom element that is an anchor link and it's href starts with javascript:fnChangeImage
Apply regex pattern /.*,'(.+)'/ on the selected element href attribute
The image url is captured in the first matching regex group.

answered May 4, 2016 at 9:05

dlock

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