javascript - 正则表达式替换 Javascript 中的图像 URL

Question

我有一组这样的图像

http://1.bp.blogspot.com/-swqrzpzvh7s/Vi6Os2n7NGI/AAAAAAAABRs/W9uC8EJldt0/s640/camera-541213_1920.jpg
http://1.bp.blogspot.com/-swqrzpzvh7s/Vi6Os2n7NGI/AAAAAAAABRs/W9uC8EJldt0/s500-p/camera-541213_1920.jpg
http://1.bp.blogspot.com/-swqrzpzvh7s/Vi6Os2n7NGI/AAAAAAAABRs/W9uC8EJldt0/s320-w160/camera-541213_1920.jpg
http://1.bp.blogspot.com/-swqrzpzvh7s/Vi6Os2n7NGI/AAAAAAAABRs/W9uC8EJldt0/s320/camera-541213_1920.jpg

您可以看到图像有 s640、s500-p、s320-w160 指定图像的高度和宽度。

我想使用正则表达式的帮助将图像网址(s640、s500-p、s320-w160)替换为(s1600)

http://1.bp.blogspot.com/-swqrzpzvh7s/Vi6Os2n7NGI/AAAAAAAABRs/W9uC8EJldt0/s1600/camera-541213_1920.jpg
http://1.bp.blogspot.com/-swqrzpzvh7s/Vi6Os2n7NGI/AAAAAAAABRs/W9uC8EJldt0/s1600/camera-541213_1920.jpg
http://1.bp.blogspot.com/-swqrzpzvh7s/Vi6Os2n7NGI/AAAAAAAABRs/W9uC8EJldt0/s1600/camera-541213_1920.jpg
http://1.bp.blogspot.com/-swqrzpzvh7s/Vi6Os2n7NGI/AAAAAAAABRs/W9uC8EJldt0/s1600/camera-541213_1920.jpg

谁能告诉我该怎么做

Answer 1

您可以创建一个函数并在路径段上分割:

// path: The image url
// replacement: The replacement string
function replaceSize(path, replacement) {
    var parts = path.split('/'); // break the string to an array
    parts[7] = replacement;      // this is the path segment to replace
    return parts.join('/');      // glue the array back into a string
}
// Test the function
console.log(replaceSize('http://1.bp.blogspot.com/-swqrzpzvh7s/Vi6Os2n7NGI/AAAAAAAABRs/W9uC8EJldt0/s640/camera-541213_1920.jpg', 's1600'));
// output: http://1.bp.blogspot.com/-swqrzpzvh7s/Vi6Os2n7NGI/AAAAAAAABRs/W9uC8EJldt0/s1600/camera-541213_1920.jpg