<script> var person = { name: "tf", age: 22, body: { height: 172, weight: 60 } } var personjson = json.stringify(person); console.log(personjson); var personjson2 = json.stringify(person, function (key, value) { switch(key){ case "height": return value + "cm"; case "weight": return value + "kg"; default: // 必须要有 return value; } }) console.log(personjson2); var personjson3 = json.stringify(person, ["name", "age"], 4); console.log(personjson3); var personobj = json.parse(personjson2); console.log(personobj); </script>
<script> var xhr = new xmlhttprequest(); xhr.onreadystatechange = function () { if(xhr.readystate == 4){ if(xhr.status >= 200 && xhr.status = 200 && xhr2.status
<script> var scr = document.createelement("script"); scr.src = "https://suggest.taobao.com/sugcode=utf-8&q=%e5%8d%ab%e8%a1%a3&callback=cb"; document.body.insertbefore(scr, document.body.firstchild); function cb(response) { console.log(response); } </script>
即通过script标签的src进行跨域访问接口,src参数包含一个回调函数(上为cb),接受参数为响应体。
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