Detailed explanation of jQuery's $.getScript method to load javaScript documents

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1. The codes of the two files are as follows:

<script>
function Ajax(){  //将9-4.html中的Ajax()函数进行修改
 $.getScript('9-8.js',function(data){
 var html ="<table border=&#39;1&#39; cellpadding=&#39;2&#39;>";
 $.each(comments, function(Index, comment) {
   html += '<tr><td>' + comment.username + ':</td><td>' + comment['content'] + '</td></tr>';
 })    //comment['username']也可写成comment.username
 html +="</table>"
//alert("Hello");
$("#target").html(html);
   }  
 );
}
</script>
<input type="button" value="Ajax提交" onclick="Ajax();" />
<p id="target"></p>

2.

##3. Analysis:

comments It is an array

comment is an object.

comments is an array, specifically a json array, and each element comment is a json object, not an array. Since it is a json object, there are two ways to get the value: comment.attribute or comment['attribute']

comments 是个数组
comment 是个对象。
我也是这样认为的。

是不是对于json对象，引用其属性有两种方式，即comment.attribute或者comment['attribute']。

但是一般的对象，引用其属性好像只能是comment.attribute这种形式吧。

我不知道对于json对象还可以这样引用comment['attribute']。我以为这样就是数组了。

这就是json区别于数组的地方，自有它的特殊性。

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