📄 23-1 “json”使用示例.htm
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<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=GB2312" />
<title>23-1 “JSON”使用示例</title>
<style>
* { font-size:12px; font-family:宋体, Arial; } /*规定了所有的字体样式*/
body { overflow:auto; background-color:buttonface; }
textarea { width:48%; height:190px; flow:left; }
</style>
<script>
function $(str){ return(document.getElementById(str)); }
function toJSONString(obj, indent){
var re, indent;
indent = indent || "";
switch(typeof(obj)){
case "number": case "boolean": case "function":
return(String(obj));
break;
case "string":
return("\""+obj.replace(/([\"\'])/g,"\\$1").replace(/\r/,"\\r").replace(/\n/,"\\n").replace(/\t/,"\\t")+"\"");
break;
case "object":
switch(obj.constructor){
case Date:
return("(new Date(\""+obj.toUTCString()+"\"))");
break;
case RegExp:
return("(new RegExp(\""+String(obj.source).replace(/(\W)/g,"\\$1")+"\", \""+(obj.global?"g":"")+(obj.ignoreCase?"i":"")+(obj.multiline?"m":"")+"\"))");
break;
case Array:
re = new Array();
for(var i=0; i<obj.length; i++)re.push(toJSONString(obj[i]));
return("[" + re.join(", ") + "]");
break;
default:
re = new Array();
for(var i in obj)re.push(indent + "\t" + toJSONString(i, "\t" + indent) + ": " + toJSONString(obj[i], "\t" + indent));
return("{\r\n" + re.join(",\r\n") + "\r\n" + indent + "}");
}
break;
}
}
var hutia = new Object();
hutia.name = "hutia";
hutia.age = 26;
hutia.male = true;
hutia.laugh = function(){ alert("I am laughing."); }
hutia.createDate = new Date();
hutia.isScriptBlock = /<script.*?<\/script>/ig;
hutia.lover = { "name":"axiang", "male":false, "age":22 }
window.onload = function(){
var str, newObj;
str = toJSONString(hutia);
$("txt").value = "变量hutia的内容是：\r\n" + str;
eval("newObj = " + str);
$("txt2").value = "重载JSON后，新对象：\r\n name:\t" + newObj.name
+ "\r\n age:\t" + newObj.age
+ "\r\n date:\t"
+ newObj.createDate.toLocaleString();
}
</script>
</head>
<body>
<textarea id="txt"></textarea><textarea id="txt2"></textarea>
</body>
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