如果要判断http或者后缀伪装图片地址可以这样：
function isImgLink(url) {
if(typeof url !== 'string') return false;
return(url.match(/^http[^\?]*.(jpg|jpeg|gif|png|tiff|bmp)(\?(.*))?$/gmi) != null);
}
console.log(isImgLink('https://example.com/img.jpg')); // true
console.log(isImgLink('https://example.com/any-route?param=not-img-file.jpg')); // false
console.log(isImgLink('https://example.com/img.jpg?param=123')); // true网友回复
我知道答案，我要回答
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