Javascript，Jquery Validator插件，ajax - 带回调的异步替换

I'm beginner at javascript so learning constantly very many new things so dont be angry if im asking a really stupid question because still learing the ropes. Trying to implement callback instead async: false. Adding this method to jquery Validator plugin. With async false works fine, but i don't wanna use it. Any help appreciated :)

我是javascript的初学者所以不断学习很多新东西,所以如果我问一个非常愚蠢的问题因为仍然学习绳索,不要生气。尝试实现回调而不是异步:false。将此方法添加到jquery Validator插件。使用async false工作正常,但我不想使用它。任何帮助赞赏:)

$.validator.addMethod( "CheckIfUsed",

function(value, element) {
var isSuccess
$.ajax({url :"/x/validate",
    data :  JSON.stringify({model:$(element).data('model'),
    field:element.name,
    equals:value}),
    contentType : 'application/json',
    type : 'POST',
    async: true,
    success: function(res){
                { isSuccess = res === "true" ? true : false }
        }
    })

return isSuccess
 },"That data allready used");

Tryd this: Javascript callback functions with ajax - did not work

试过这个:用ajax的Javascript回调函数 - 没有用

Or am i doing something copletly wrong

或者我在做一些错误的事情

1 个解决方案

#1

From the documentation the remote method does almost exactly what you describe. https://jqueryvalidation.org/remote-method/ here is an example that I use in many parts of my current code-base.

从文档中,远程方法几乎完全符合您的描述。 https://jqueryvalidation.org/remote-method/这是我在当前代码库的许多部分中使用的示例。

$("#SIN").rules("add", {
        remote: {
            url: '/x/ValidateUsed',
            async: true,
            data: {
                sin: function () { return $("#SIN").val(); },
                clientId: $("#ClientID").val()
            }
        }
    });

Just remember that "validate" or in my case "ValidateUsed" needs to return true if not used or null, undefined, or a custom message like That data already used if it is in use.

只记得“验证”或在我的情况下“ValidateUsed”需要返回true,如果没有使用或null,undefined或自定义消息,如该数据已被使用,如果它正在使用。

#1