兄弟们，俺只讲核心哈 就讲修改和删除把 //修改
myobj.ke[0]= "HTML教程" var i,x=""; for(i in myobj.ke) { x = x + i + " | " + myobj.ke[i] + "
" } document.getElementById("demo02").innerHTML = x;
核心在于覆盖 其他的有不懂的同学请看123哈，你真会跳啊兄dei
//删除
delete myobj.ke[2] var j,y = ""; for(j=0;j<myobj.ke.length;j++) { y = y + myobj.ke[j] + "
" } document.getElementById("demo03").innerHTML = y;
核心在于删除delete myobj.ke[2]，因为没有了，浏览器以为你没写就undefined啊，兄dei
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title></title> </head> <body> <h2>JSON 数组04-对象中的数组-修改和删除</h2> <div id="demo01"></div><hr> <div id="demo02"></div><hr> <div id="demo03"></div> <script type="text/javascript"> var myobj; myobj={ "xm":"黄菊华", "num":3, "ke":["html","css","js"] } document.getElementById("demo01").innerHTML =myobj.ke[0]+"
"; document.getElementById("demo01").innerHTML = document.getElementById("demo01").innerHTML + myobj.ke[1]+"
"; document.getElementById("demo01").innerHTML = document.getElementById("demo01").innerHTML + myobj.ke[2]+"
"; //修改 myobj.ke[0]= "HTML教程" var i,x=""; for(i in myobj.ke) { x = x + i + " | " + myobj.ke[i] + "
" } document.getElementById("demo02").innerHTML = x; //删除 delete myobj.ke[2] var j,y = ""; for(j=0;j<myobj.ke.length;j++) { y = y + myobj.ke[j] + "
" } document.getElementById("demo03").innerHTML = y; </script> </body> </html>
兄弟们，核心来了，超级嵌套 ！！！！ 记住了，兄弟们，对象里面的是属性，数组里面的是下标从0开始的下标，核心哈· 比如这里面是吧·，对象里面的属性有name num sites sites属性里面的数组下标为 1{“name”:“淘宝”,“info”:[“购物网站”,“www.taobao.com”,“电商”]}, 2{“name”:“QQ”,“info”:[“综合网站”,“www.qq.com”,“综合”]}, 3{“name”:“百度”,“info”:[“搜索网站”,“www.baidu.com”,“搜索”]} 记住了，我前面说过了，属性里面也可以写数组的哈 然后是对象里面的属性是name info 然后是对象里面的属性是数组 0[“购物网站”,“www.taobao.com”,“电商”] 1[“综合网站”,“www.qq.com”,“综合”] 2[“搜索网站”,“www.baidu.com”,“搜索”] 就这么简单，知道把
obj = { "name":"网站", "num":3, "sites":[ {"name":"淘宝","info":["购物网站","www.taobao.com","电商"]}, {"name":"QQ","info":["综合网站","www.qq.com","综合"]}, {"name":"百度","info":["搜索网站","www.baidu.com","搜索"]} ] }
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title></title> </head> <body> <h2>1JSON 数组05-复杂的嵌套</h2> <div id="demo01"></div> <script type="text/javascript"> var obj,i,j,x =""; obj = { "name":"网站", "num":3, "sites":[ {"name":"淘宝","info":["购物网站","www.taobao.com","电商"]}, {"name":"QQ","info":["综合网站","www.qq.com","综合"]}, {"name":"百度","info":["搜索网站","www.baidu.com","搜索"]} ] } for(i in obj.sites)//遍历sites属性中的数组有3个 { x = x + "
" + obj.sites[i].name + "
"//三次 //然后是第一个（）下标0）name的值是： for(j in obj.sites[i].info)//然后是获取到"info":["购物网站","www.taobao.com","电商"]了，三次 { x = x + obj.sites[i].info[j] + "
";//然后遍历要下{"name":"淘宝","info":["购物网站","www.taobao.com","电商"]},一共九次 //里面的["购物网站","www.taobao.com","电商"]，之后的按照我的思路进行就行了 } } document.getElementById("demo01").innerHTML =x; </script> </body> </html>
OK了，大家多想想就明白了，拜拜！！！！！
