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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                json在javascript里邊就是字面量對象 var obj = {名稱:值,名稱:值,名稱:function(){}} **php生成json信息** json\_encode(數組/對象)————>生成json信息 其中傳進去一維數組是返回中括號的,其他是大括號.都是string類型 (json信息在php中的數據類型是字符串) php處理json json\_decode(json信息,boolean); 反編碼json信息 對json字符串信息進行反編碼,變為當前語言可以識別的信息。對json字符串要求單引號定義 ![Image](https://box.kancloud.cn/bc8746901251e810c4ee7f3378e1cdc7_532x87.png) json\_decode(json字符串,true)—>array json\_decode(json字符串,\[false\])—>object//基類 **javascript接收處理json信息** ajax獲得接口信息,javascript本身處理json信息 通過eval()把接收的json字符串變成真實的對象信息 js中把字符串對象變為實體對象信息 var obj=”{name:’kitty’,age:5}”; eval(“var cat=”+obj); eval(“var cat={name:’kitty’,age:5}”); <button onclick="f1()">觸發</button> <script> function f1(){ var xhr=new XMLHttpRequest(); xhr.onreadystatechange=function(){ if(xhr.readyState==4){ eval("var cat="+xhr.responseText); console.log(cat.city); console.log(cat.wind); console.log(cat.temp); } } xhr.open('get','./test.php'); xhr.send(null); } </script> <?php $jin\_weather=array( 'city'=>'baidu', 'wind'=>'south', 'temp'=>26 ); $result=json\_encode($jin\_weather); echo $result; ?>
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