这篇文章主要介绍了jquery.form.js清空form的方法,需要的朋友可以参考下

本段代码摘取自jquery.form.js中，由于觉得该方法的使用性非常强，同时也可独立拿出来使用。 该段代码言简意赅可以很好的作为学习参考。  代码如下: /**  * Clears the form data. Takes the following actions on the form's input fields:  * - input text fields will have their 'value' property set to the empty string  * - select elements will have their 'selectedIndex' property set to -1  * - checkbox and radio inputs will have their 'checked' property set to false  * - inputs of type submit, button, reset, and hidden will *not* be effected  * - button elements will *not* be effected  */ $.fn.clearForm = function(includeHidden) {     return this.each(function() {         $('input,select,textarea', this).clearFields(includeHidden);   //this表示设置上下文环境，有多个表单时只作用调用的表单     }); };   $.fn.clearFields = $.fn.clearInputs = function(includeHidden) {     var re = /^(?:color|date|datetime|email|month|number|password|range|search|tel|text|time|url|week)$/i; // 'hidden' is not in this list     return this.each(function() {         var t = this.type, tag = this.tagName.toLowerCase();         if (re.test(t) || tag == 'textarea') {             this.value = '';         }         else if (t == 'checkbox' || t == 'radio') {             this.checked = false;         }         else if (tag == 'select') {             this.selectedIndex = -1;         }          else if (t == "file") {             if (/MSIE/.test(navigator.userAgent)) {                  $(this).replaceWith($(this).clone(true));             } else {                  $(this).val('');             }        }         else if (includeHidden) {             // includeHidden can be the value true, or it can be a selector string             // indicating a special test; for example:             // $('#myForm').clearForm('.special:hidden')             // the above would clean hidden inputs that have the class of 'special'             if ( (includeHidden === true && /hidden/.test(t)) ||                  (typeof includeHidden == 'string' && $(this).is(includeHidden)) ) {                 this.value = '';             }         }     }); };