--- title: jQuery Ajax Post Method localeTitle: jQuery Ajax Post方法 --- ## jQuery Ajax Post方法 发送异步http POST请求以从服务器加载数据。其一般形式是: ```javascript jQuery.post( url [, data ] [, success ] [, dataType ] ) ``` * url:是唯一的必需参数。此字符串包含要将请求发送到的地址。如果未指定其他参数,则将忽略返回的数据 * data:与请求一起发送到服务器的普通对象或字符串。 * success:如果请求成功则执行的回调函数。它将返回的数据作为参数。它还传递了响应的文本状态。 * dataType:服务器所需的数据类型。默认为Intelligent Guess(xml,json,script,text,html)。如果提供了此参数,则还必须提供成功回调。 #### 例子 ```javascript $.post('http://example.com/form.php', {category:'client', type:'premium'}); ``` 从服务器请求`form.php` ,发送附加数据并忽略返回的结果 ```javascript $.post('http://example.com/form.php', {category:'client', type:'premium'}, function(response){ alert("success"); $("#mypar").html(response.amount); }); ``` 从服务器请求`form.php` ,发送附加数据并处理返回的响应(json格式)。此示例可以使用以下格式编写: ```javascript $.post('http://example.com/form.php', {category:'client', type:'premium'}).done(function(response){ alert("success"); $("#mypar").html(response.amount); }); ``` 以下示例使用Ajax发布表单并将结果放入div \`\`\`html jQuery.post演示 // Attach a submit handler to the form $( "#searchForm" ).submit(function( event ) { // Stop form from submitting normally event.preventDefault(); // Get some values from elements on the page: var $form = $( this ), term = $form.find( "input\[name='s'\]" ).val(), url = $form.attr( "action" ); // Send the data using post var posting = $.post( url, { s: term } ); // Put the results in a div posting.done(function( data ) { var content = $( data ).find( "#content" ); $( "#result" ).empty().append( content ); }); }); ``` The following example use the github api to fetch the list of repositories of a user using jQuery.ajax() and put results in a div ``` HTML // Attach a submit handler to the form $( "#userForm" ).submit(function( event ) { // Stop form from submitting normally event.preventDefault(); // Get some values from elements on the page: var $form = $( this ), username = $form.find( "input\[name='username'\]" ).val(), url = "https://api.github.com/users/"+username+"/repos"; // Send the data using post var posting = $.post( url, { s: term } ); //Ajax Function to send a get request $.ajax({ type: "GET", url: url, dataType:"jsonp" success: function(response){ //if request if made successfully then the response represent the data $( "#result" ).empty().append( response ); } }); }); ``` ### jQuery.ajax() `$.post( url [, data ] [, success ] [, dataType ] )` is a shorthand Ajax function, equivalent to: ``` JavaScript的 $就({ 类型:“POST”, 网址:网址 数据:数据, 成功:成功, dataType:dataType }); \`\`\` `$.ajax()`提供了更多可在[此处](http://api.jquery.com/jquery.ajax/)找到的选项 #### 更多信息: 有关更多信息,请访问[官方网站](https://api.jquery.com/jquery.post/)