替换字符串不能很好地工作(replace string doesn't work well)

替换字符串不能很好地工作(replace string doesn't work well) var base64Data = 'data:image/jpeg;base64,/9j/4AAQSkZJRgABAQ' var base64ImageContent = base64Data.replace(/^data:image\/(png|jpg);base64,/, ""); console.log(base64ImageContent) <-- still the same

这有什么不对？ 替换在这里不起作用，我的错误在哪里？

var base64Data = 'data:image/jpeg;base64,/9j/4AAQSkZJRgABAQ' var base64ImageContent = base64Data.replace(/^data:image\/(png|jpg);base64,/, ""); console.log(base64ImageContent) <-- still the same

What's wrong here? replace doesn't work here, where is my mistake?

最满意答案

您已经：

var base64Data ='data：image / jpeg ; base64，/ 9j / 4AAQSkZJRgABAQ'

但你匹配：

var base64ImageContent = base64Data.replace（/ ^ data：image /（png | jpg ）; base64，/，“”）;

你需要包括jpeg ：

var base64ImageContent = base64Data.replace(/^data:image\/(png|jpg|jpeg);base64,/, "");

You've:

var base64Data = 'data:image/jpeg;base64,/9j/4AAQSkZJRgABAQ'

but you're matching:

var base64ImageContent = base64Data.replace(/^data:image/(png|jpg);base64,/, "");

You need to include jpeg:

var base64ImageContent = base64Data.replace(/^data:image\/(png|jpg|jpeg);base64,/, "");