This time I will show you how to use json as a parameter in js. What are the precautions for using json as a parameter in js. The following is a practical case, let's take a look.
function getAjaxData(urlstr, callback_func, options){ var myurl = AJAX_HEADER + urlstr + AJAX_TAIL; var isAsync = true;//初始化是否同步的属性设置 var nTimeout = AJAX_TIMEOUT;//初始化请求超时的数据 var errorCallback = null; //利用JSON对象options来修改默认初始化的属性,这样一个参数可以设置多个属性 if (options) { if (options.sync) //sync这个参数就是JSON的对象 { isAsync = (options.sync === true) ? false : true; } if (options.timeout) { nTimeout = parseInt(options.timeout); if (isNaN(nTimeout)) nTimeout = AJAX_TIMEOUT; } errorCallback = options.errorCB; } if ($.browser.mozilla) { try { //netscape.security.PrivilegeManager.enablePrivilege("UniversalBrowserRead"); } catch (exception) { log.error(exception); } } $.ajax({ async: isAsync, //cache: false, type: "GET", timeout: nTimeout, url: myurl, //dataType: ($.browser.msie) ? "text" : "xml", error: function(XMLHttpRequest, textStatus){ try { if (jQuery.isFunction(errorCallback)) { errorCallback(XMLHttpRequest, textStatus); } log.error("MAIN : getAjaxData(" + myurl + ") error."); log.error("MAIN : XMLHttpRequest.readyState = " + XMLHttpRequest.readyState); log.error("MAIN : XMLHttpRequest.status = " + XMLHttpRequest.status); log.error("MAIN : textStatus " + textStatus); } catch (exception) { log.error(exception); } }, success: function(data){ log.debug("MAIN : getAjaxData(" + myurl + ") sucess."); log.trace(data); var xml; if (typeof data == "string" || typeof data == "number") { if (!window.ActiveXObject) { var parser = new DOMParser(); xml = parser.parseFromString(data, "text/xml"); } else { //IE xml = new ActiveXObject("Microsoft.XMLDOM"); xml.async = false; xml.loadXML(data); } } else { xml = data; } if (typeof callback_func == "function") { callback_func($(xml)); } else { log.error("callback_func is undefined or not a function"); } } }); } getAjaxData("api/monitoring/status", function($xml){ var wlan_ret = xml2object($xml); if(wlan_ret.type == "response") { monitoring_status = wlan_ret.response; setCurrrentUserHTML(); } }, { sync:true //通过JSON传递多个数据,防止数据冗余,这里类似于配置信息 });The following is a simple example:
function testJSON(JSON){ alert(JSON.name); alert(JSON.age); alert(JSON.id); } testJSON({name:"huangbiao", "age":23, "id":1});I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website! Recommended reading:
Summary of string to json method in JS
How to achieve serialization and deserialization of Json (With code)
The above is the detailed content of How to use json as parameter in js. For more information, please follow other related articles on the PHP Chinese website!

去掉重复并排序的方法:1、使用“Array.from(new Set(arr))”或者“[…new Set(arr)]”语句,去掉数组中的重复元素,返回去重后的新数组;2、利用sort()对去重数组进行排序,语法“去重数组.sort()”。

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方法:1、利用“点击元素对象.unbind("click");”方法,该方法可以移除被选元素的事件处理程序;2、利用“点击元素对象.off("click");”方法,该方法可以移除通过on()方法添加的事件处理程序。

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foreach不是es6的方法。foreach是es3中一个遍历数组的方法,可以调用数组的每个元素,并将元素传给回调函数进行处理,语法“array.forEach(function(当前元素,索引,数组){...})”;该方法不处理空数组。


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