validation 的js是做什么用的
发布网友
发布时间：2022-04-26 11:41
共1个回答
热心网友
时间：2022-04-20 02:42
一下是自己写的一个小例子：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>jQuery.validationEngine plugin Demo</title>
<link type="text/css"rel="stylesheet"href="/static/css/jquery.validation/validationEngine.jquery.css"/>
<script type="text/javascript"src="/static/js/jquery/jquery-1.9.1.min.js"></script>
<script type="text/javascript"src="/static/js/jquery.validation/jquery.validationEngine-zh_CN.js"></script>
<script type="text/javascript"src="/static/js/jquery.validation/jquery.validationEngine.js"></script>
<script type="text/javascript">
$(function(){
var form ="myForm";
var condition = [
{name:"username",rule:"validate[required,maxSize[5]]"} ,
{name:"password",rule:"validate[required] text-input"} ,
{name:"url",rule:"validate[required,custom[url]]"},
{name:"letter",rule:"validate[required,custom[onlyLetterNumber]]"},
{name:"date",rule:"validate[required,custom[date]]"}
];
validationInit(condition,form);
$("#sub").click(function(){
console.log("validationform="+$("#"+form).validationEngine('validate'));
if($("#"+form).validationEngine()){
return;
}
myForm.submit();
});
});
function validationInit(condition,form){
for(var i = 0; i < condition.length; i++){
var cond = condition[i];
$("#"+form+"[name="+cond.name+"]").attr("class",cond.rule);
}
$("#"+form).validationEngine('attach',{
}).css({border:"2px solid #000"});
}
</script>
</head>
<body>
<div style="padding-top: 100px">
<form action=""id="myForm"name="myForm"method="post">
username:<input type="text"name="username"id="username"/><br/>
password:<input type="text"name="password"id="password"data-prompt-position="bottomLeft:20px"/><br/>
url:<input type="text"id="url"name="url"value="http://"/><br/>
only letter:<input type="text"id="letter"name="letter"value="too many spaces obviously"/><br/>
date:<input type="text"id="date"name="date"value=""/><br/>
<input type="button"value="提交"id="sub"/>
</form>
</div>
</body>
</html>
可以看出使用了jquery.validationEngine plugin之后页面的校验js代码变得更加整洁了。
除了上述用法，jquery.validationEngine也可以作用在某个表单元素上
$("#form.id").validationEngine();
或
$("#form.id").validationEngine(action or options);
validationEngine的几个基本action:
attach:绑定表单验证
detach:解除表单验证
validate:验证控件或表单 返回ture or false
showPrompt:在某个元素上创建一个提示,3中状态‘pass’，‘error’,'load'
hide:隐藏对应元素及元素内的提示信息
hideAll:隐藏页面上的所有提示
updatePromptsPosition:更新提示层的位置
从
$("#"+form).validationEngine('attach',{
}).css({border:"2px solid #000"});
可以看出validationEngine方法支持链式调用。
validationEngine的3中自定义事件
jqv.form.validating:$("#form").bind("jqv.form.validating",function(event){});表单验证时事件
jqv.form.result:$("#form").bind("jqv.form.result",function(event,errorFound){});表单验证完成时事件 errorFound：表单验证不通过(true或false)
jqv.field.result:$("#form").bind("jqv.field.result",function(event,field,isError,promptText){});单个控件验证完成时事件，field 控件对象，isError:控件验证不通过(true或false)promptText: 提示信息
HTML5属性
属性名 描述
data-validation-engine 设置验证规则，除了class验证的另一种选择
data-validation-placeholder 占位符 当为必填控件验证时值不能为空 也不能为占位符
data-prompt-position 自定义提示信息的位置，可设置为："topRight","topLeft","bottomRight""bottomLeft","centerRight","centerLeft","inline"可设置更具体的位置，格式为："方向:X偏移值,Y偏移值"。如：data-prompt-position="bottomLeft:20,5"PS：偏移值可以为负数
data-prompt-target 载入提示信息的容器，值为元素的id 仅在promptPosition或data-prompt-position设置为”inline“时有效
jquery.validationEngine默认属性值
// LEAK GLOBAL OPTIONS
$.validationEngine= {fieldIdCounter: 0,defaults:{
// 触发控件校验的事件名称
validationEventTrigger:"blur",
// 自动滚动视窗到第一个错误位置
scroll: true,
// 为第一个input框聚焦
focusFirstField:true,
// 是否提示信息
showPrompts: true,
// 是否验证不可见元素(如type="hidden"的输入框)
validateNonVisibleFields: false,
// 用特殊class属性值 来忽略校验控件
ignoreFieldsWithClass: 'ignoreMe',
// Opening box position, possible locations are: topLeft,
// topRight, bottomLeft, centerRight, bottomRight, inline
// inline gets inserted after the validated field or into an element specified in data-prompt-target
//提示信息的位置设定
promptPosition:"topRight",
bindMethod:"bind",
// internal, automatically set to true when it parse a _ajax rule
inlineAjax: false,
// if set to true, the form data is sent asynchronously via ajax to the form.action url (get)
//是否使用Ajax提交表单 默认是get方式
ajaxFormValidation: false,
// The url to send the submit ajax validation (default to action) //设置Ajax提交的url 默认为form的action
ajaxFormValidationURL: false,
// HTTP method used for ajax validation
//设置Ajax表单提交时使用的数据传输方式
ajaxFormValidationMethod: 'get',
// Ajax form validation callback method: boolean onComplete(form, status, errors, options)
// retuns false if the form.submit event needs to be canceled.
//表单提交，Ajax验证完成后的行为
onAjaxFormComplete: $.noop,
// called right before the ajax call, may return false to cancel //表单提交验证通过后 Ajax提交之前的回调函数
onBeforeAjaxFormValidation: $.noop,
// Stops form from submitting and execute function assiciated with it
onValidationComplete: false,
// Used when you have a form fields too close and the errors messages are on top of other disturbing viewing messages
doNotShowAllErrosOnSubmit: false,
// Object where you store custom messages to override the default error messages
custom_error_messages:{},
// true if you want to validate the input fields on blur event
binded: true,
// set to true if you want to validate the input fields on blur only if the field it's not empty
notEmpty: false,
// set to true, when the prompt arrow needs to be displayed
showArrow: true,
// set to false, determines if the prompt arrow should be displayed when validating
// checkboxes and radio buttons
showArrowOnRadioAndCheckbox: false,
// did one of the validation fail ? kept global to stop further ajax validations
isError: false,
// Limit how many displayed errors a field can have
maxErrorsPerField: false,
// Caches field validation status, typically only bad status are created.
// the array is used ring ajax form validation to detect issues early and prevent an expensive submit
ajaxValidCache: {},
// Auto update prompt position after window resize
autoPositionUpdate: false,
InvalidFields: [],
onFieldSuccess: false,
onFieldFailure: false,
onSuccess: false,
onFailure: false,
validateAttribute:"class",
addSuccessCssClassToField:"",
addFailureCssClassToField:"",
// Auto-hide prompt
autoHidePrompt: false,
// Delay before auto-hide
autoHideDelay: 10000,
// Fade out ration while hiding the validations
fadeDuration: 0.3,
// Use Prettify select library
prettySelect: false,
// Add css class on prompt
addPromptClass :"",
// Custom ID uses prefix
usePrefix:"",
// Custom ID uses suffix
useSuffix:"",
// Only show one message per error prompt
showOneMessage: false
