为什么警告AnchorElement(< a>)会警告href属性?

问题描述:

<a href="url">A link</a>

$.each($('a'), function(index,value){
    alert (value)
});

它会发出警告: url
为什么会这样?

It will alert : url. Why this happens?

这是因为 toString()$ c $锚的c>给出了URL。

It's because the toString() of the anchor gives the URL.

直播演示

alert 调用 toString()对象的隐含性。因此,当您提醒数组时:

alert calls toString() implicity on objects. so when you alert an array like:

[1,2,3,4,5,6]

警告它会给你:

"1,2,3,4,5,6"

因为toString( )数组是用逗号分隔的元素。

Because the toString() of array is the elements separated by a comma.

如果在调试时遇到此问题,则应使用 console.log()而不是 alert()

If you encounter this problem while debugging, you should use console.log() instead of alert()