diff --git a/README.md b/README.md
index 256259f..6cd38d1 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,7 @@ jquery async upload plugin
 easy to use
 
     // 上传方法
+```javascript
 	$.upload({
 			// 上传地址
 			url: '/admin/upload', 
@@ -16,7 +17,8 @@ easy to use
 					return true;
 			},
 			// 上传之后回调
-			onComplate: function(data) {
+			onComplete: function(data) {
 					alert(data);
 			}
-	});
\ No newline at end of file
+	});
+```
diff --git a/jquery.upload.js b/jquery.upload.js
index 9818739..fb22103 100644
--- a/jquery.upload.js
+++ b/jquery.upload.js
@@ -15,12 +15,12 @@
 		params: {},
 		onSend: noop,
 		onSubmit: noop,
-		onComplate: noop
+		onComplete: noop
 	};
 
 	$.upload = function(options) {
 		var opts = $.extend(jQuery.uploadDefault, options);
-		if (opts.url == '') {
+		if (!opts.url) {
 			return;
 		}
 		
@@ -36,7 +36,7 @@
 		
 		// form中增加数据域
 		var formHtml = '<input type="file" name="' + opts.fileName + '" onchange="onChooseFile(this)">';
-		for (key in opts.params) {
+		for (var key in opts.params) {
 			formHtml += '<input type="hidden" name="' + key + '" value="' + opts.params[key] + '">';
 		}
 		form.append(formHtml);
@@ -47,13 +47,13 @@
 		form.submit(opts.onSubmit);
 		
 		// iframe 在提交完成之后
-		iframe.load(function() {
+		iframe.on('load', function() {
 			var contents = $(this).contents().get(0);
 			var data = $(contents).find('body').text();
 			if ('json' == opts.dataType) {
-				data = window.eval('(' + data + ')');
+				data = JSON.parse(data);
 			}
-			opts.onComplate(data);
+			opts.onComplete(data);
 			setTimeout(function() {
 				iframe.remove();
 				form.remove();