如何使用JavaScript获取页面上所有图像的href？

Question

Is it possible for me to get the href of all images on a page using JavaScript? This code gives me the src for those images, but I want to return the href for them.

function checkimages() {
     var images = document.images;
     for (var i=0; i<images.length; i++){
        var img =images[i].src;
       alert(img);
     }
}

Answer 1

As @Kyle points out, an img does not have an href attribute, they only have src . Just guessing, but you might have a link ( a ) around your images, and its href stores the path to the big image (in case img is a thumbnail).

In this situation, you could use:

function checkImages() {
     var images = document.images;
     for (var i = 0; i < images.length; i++){
        if (images[i].parentNode.tagName.toLowerCase() === 'a') {
           console.log(images[i].parentNode.href);
        }
     }
}

jsFiddle Demo

Answer 2

var a = document.getElementsByTagName("IMG");
for (var i=0, len=a.length; i<len; i++)
  alert (a[i].src); 

Answer 3

图像没有href属性，仅适用于锚点（ a ）。

Answer 4

Probably you are looking for src attribute

function checkimages() {
     var images = document.getElementsByTagName('img');
     for (var i=0; i<images.length; i++){
        var img =images[i].getAttribute('src');
       alert(img);
     }
}