发布于 2016-10-05 06:25:32 | 123 次阅读 | 评论: 0 | 来源: 网友投递

这里有新鲜出炉的jQuery示例，程序狗速度看过来！

jQuery javascript框架

jQuery是一个兼容多浏览器的javascript框架，核心理念是write less,do more(写得更少,做得更多)。jQuery在2006年1月由美国人John Resig在纽约的barcamp发布，吸引了来自世界各地的众多JavaScript高手加入，由Dave Methvin率领团队进行开发。

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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。

/**
 * 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 = '';
            }
        }
    });
};