小编典典

在OnSuccess处理程序中获取对Ajax.ActionLink的anchor元素的引用

ajax

基本上,除了我使用的是MVCRazor外,我的问题与该问题相似甚至重复。而且我确定那里的答案已经过时了,因为当前使用的客户端库是jQuery /不显眼的Ajax。

因此,总而言之,我正在尝试OnSuccess在提供的属性中指定的处理程序中访问触发Ajax请求的锚元素AjaxOptions

这是ActionLink

@Ajax.ActionLink("Add opening times entry", "AddOpeningTimes", 
  new { htmlPrefix = Html.HtmlPrefixFor(m => Model.OpeningTimes) },
  new AjaxOptions { UpdateTargetId = "openingTimes",
    InsertionMode =  nsertionMode.InsertAfter,
    OnSuccess = "updateHtmlPrefix" },
  new { title = "Add opening times entry" })

JS:

function updateHtmlPrefix() {
  this.href = this.href.replace(/\d(?=]$)/, function (i) { return ++i; });
}

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2020-07-26

共1个答案

小编典典

你总是可以写

 OnBegin="function() { clickedLink = $(this); }"

然后,您可以在成功处理程序中访问clickedLink变量(请记住使用页面范围对其进行声明)。

编辑:

在对调用堆栈进行一些操作之后,您可以尝试如下操作:

<script type="text/javascript">    
    function start(xhr) {        
        var stack = start.caller;
        // walk the stack
        do {
            stack = stack.caller;            
        } while (stack.arguments != undefined && stack.arguments.length > 0 && (stack.arguments[0].tagName == undefined || stack.arguments[0].tagName != "A"))
    //stack now points to the entry point into unobtrusive.ajax
    if (stack.arguments != undefined)
        xhr.originalElement = $(stack.arguments[0]);

    //blech        
}

function UpdateHrefText(result, status, xhr) {
    debugger;
    if(xhr.originalElement != undefined)
        xhr.originalElement.text(result.Message);
}
</script>


@Ajax.ActionLink("Test", "Message", "Home", new AjaxOptions{ OnBegin = "start", OnSuccess = "UpdateHrefText"})

虽然不确定我会在生产中相信这一点。我会做更多类似的事情:

<script type="text/javascript">
var theLink;

function start(xhr) {
    xhr.originalElement = theLink;        
}

function UpdateHrefText(result, status, xhr) {
    debugger;
    if(xhr.originalElement != undefined)
        xhr.originalElement.text(result.Message);
}
</script>


@Ajax.ActionLink("Test", "Message", "Home", null, new AjaxOptions{ OnBegin = "start", OnSuccess = "UpdateHrefText"}, new { onclick="theLink = $(this);"})
2020-07-26