捕获并延迟 javascript onsubmit 事件

发布于 2024-11-07 04:30:30 字数 812 浏览 1 评论 0原文

我正在使用一个 jQuery 插件，该插件将占位符添加到本机不支持它们的浏览器的输入中，并尝试在使用 Asp.Net 表单验证的表单上使用它。

在表单提交时，我将清除所有占位符值，以便它们不会提交，但验证不会报告空输入，因为它在清除我的输入之前触发。

有没有一种方法可以捕获表单 onsubmit 上的原始验证事件并将其存储起来，以便在我不需要时触发它？

我想这就是我需要捕捉的方法。

onsubmit="javascript:返回 WebForm_OnSubmit();"

    $(function () {

        // capture the original onsubmit event here.

        // Look for forms
        $("form").bind("submit.placeholder", function () {
            // Clear the placeholder values so they don’t get submitted
            var $inputs = $(".placeholder", this).each(clearPlaceholder);

            // call the event here.            

            setTimeout(function () {
                $inputs.each(setPlaceholder);
            }, 10);
        });
    });

原文

I'm using a jQuery plugin that adds placeholders to inputs for browsers that do not natively support them and am trying to use it on a form that uses Asp.Net form validation.

On form submit I'm clearing any placeholder values so they are not submitted but validation is not reporting an empty input as it is firing before my input is cleared.

Is there a way of capturing the original validation event on form onsubmit and storing it so that it fires when I wan't it to?

I think this is the method I need to capture.

onsubmit="javascript:return
WebForm_OnSubmit();"

    $(function () {

        // capture the original onsubmit event here.

        // Look for forms
        $("form").bind("submit.placeholder", function () {
            // Clear the placeholder values so they don’t get submitted
            var $inputs = $(".placeholder", this).each(clearPlaceholder);

            // call the event here.            

            setTimeout(function () {
                $inputs.each(setPlaceholder);
            }, 10);
        });
    });

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月隐月明月朦胧 2024-11-14 04:30:30

var attrs = $('[onsubmit!=""]').attr('onsubmit');// gets the string of the on submit
$('[onsubmit!=""]').attr('onsubmit','');//remove the onsubmit text

eval(attrs);

我不会使用 eval 因为它很危险（或者有人这么说），但你知道由你决定。

顺便说一句，占位符用于 HTML 5 上的

var attrs = $('[onsubmit!=""]').attr('onsubmit');// gets the string of the on submit
$('[onsubmit!=""]').attr('onsubmit','');//remove the onsubmit text

eval(attrs);

I wouldnt use eval coz its dangerous (or so some say) but you know up to you.

by the way a placeholder is used on <input type="text" placeholder="Search" /> on HTML 5

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