jQuery/JavaScript: accessing contents of an iframe

I would like to manipulate the HTML inside an iframe using jQuery. I thought I'd be able to do this by setting the context of the jQuery function to be the document of the iframe, something like: $(function(){ //document ready $('some selector', frames['nameOfMyIframe'].document).doStuff() }); However this doesn't seem to work. A bit of inspection shows me that the variables in f

jQuery / JavaScript:访问iframe的内容

我想使用jQuery来处理iframe中的HTML。 我认为我可以通过将jQuery函数的上下文设置为iframe的文档来完成此操作,如下所示: $(function(){ //document ready $('some selector', frames['nameOfMyIframe'].document).doStuff() }); 但是,这似乎并不奏效。 有点检查表明, frames['nameOfMyIframe']中的变量undefined除非我等待iframe加载一段时间。 但是,当iframe加载变量不可访问(我得到permission denied

What is JSONP all about?

This question already has an answer here: Can anyone explain what JSONP is, in layman terms? 4 answers It's actually not too complicated... Say you're on domain example.com, and you want to make a request to domain example.net. To do so, you need to cross domain boundaries, a no-no in most of browserland. The one item that bypasses this limitation is <script> tags. When y

什么是JSONP?

这个问题在这里已经有了答案: 任何人都可以用通俗的话来解释JSONP是什么? 4个答案 其实并不复杂...... 假设您位于example.com域,并且您想向域example.net发出请求。 要做到这一点,你需要跨越领域的界限,在大多数浏览器领域都是不允许的。 绕过这个限制的一个条目是<script>标签。 当您使用脚本标记时,域限制将被忽略,但在正常情况下,您无法对结果进行任何操作,只会对脚本进行评估。 输入JSONP。 当

JSON diff of large JSON data, finding some JSON as a subset of another JSON

I have a problem I'd like to solve to not have to spend a lot of manual work to analyze as an alternative. I have 2 JSON objects (returned from different web service API or HTTP responses). There is intersecting data between the 2 JSON objects, and they share similar JSON structure, but not identical. One JSON (the smaller one) is like a subset of the bigger JSON object. I want to find

大型JSON数据的JSON差异,找到一些JSON作为另一个JSON的子集

我有一个问题,我想解决,而不必花费大量的手动工作来分析作为替代。 我有2个JSON对象(从不同的Web服务API或HTTP响应返回)。 这两个JSON对象之间有相交的数据,它们共享相似的JSON结构,但不完全相同。 一个JSON(较小的一个)就像更大的JSON对象的一个​​子集。 我想查找两个对象之间的所有相关数据。 实际上,我对对象内的共享参数/属性更感兴趣,而不是每个对象的参数/属性的实际值。 因为我想最终使用来自一个JSON

How do I encode JSON in PHP via jQuery Ajax post data?

I have an HTML form and send data to php file when hitting submit button. $.ajax({ url: "text.php", type: "POST", data: { amount: amount, firstName: firstName, lastName: lastName, email: email }, dataType: "JSON", success: function (data) { console.log("ok"); $("#result").text(data); } }); In PHP: <?php $amount

如何通过jQuery Ajax发布数据在PHP中对JSON进行编码?

我有一个HTML表单,并在点击提交按钮时将数据发送到php文件。 $.ajax({ url: "text.php", type: "POST", data: { amount: amount, firstName: firstName, lastName: lastName, email: email }, dataType: "JSON", success: function (data) { console.log("ok"); $("#result").text(data); } }); 在PHP中: <?php $amount = $_POST[

Mime type missing for .rar and .tar

Javascript (Windows 8.1, Firefox) doesn't seem to have mime types for .tar files or .rar files (and perhaps others; these are the only two I've found). What's up with that? Is there anything I can use to resolve this? I'd really like to be able to retrieve mime types for these file types without doing some weird extension hacking. I made a fiddle to prove the issue: http://js

.rar和.tar文件缺少MIME类型

Javascript(Windows 8.1,Firefox)似乎没有.tar文件或.rar文件的MIME类型(也许是其他的;这些是我找到的唯一两个)。 那是怎么回事? 有什么我可以用来解决这个问题吗? 我真的很希望能够为这些文件类型检索MIME类型,而无需进行一些奇怪的扩展黑客攻击。 我做了一个小提琴来证明这个问题:http://jsfiddle.net/kungfujoe/jd8h7wvs/ 如果您浏览到.txt或.docx或其他许多格式,则类型会成功拉取。 但是,.tar和.rar都不

Which MIME type to return?

I have an HTML page with a JavaScript code that sends AJAX request. The request is being handled by my servlet. I've thought that it's "better" and "more correct" to return the data as "application/json" MIME type from the servlet (response content type). However, it drives MSIE crazy - meaning the browser seems not to be capable to display/process this MI

哪种MIME类型返回?

我有一个发送AJAX请求的JavaScript代码的HTML页面。 该请求正在由我的servlet处理。 我认为从servlet(响应内容类型)作为“application / json”MIME类型返回数据“更好”和“更正确”。 然而,它使MSIE变得疯狂 - 意味着浏览器似乎无法显示/处理这种MIME类型(Chrome / FF很好)。 当我没有明确指定类型时 - 在所有浏览器中都可以正常工作。 对于AJAX请求,servlet是否应该返回MIME类型是真的吗? 更新:我的服务器端在Java中

How to merge two arrays in JavaScript and de

I have two JavaScript arrays: var array1 = ["Vijendra","Singh"]; var array2 = ["Singh", "Shakya"]; I want the output to be: var array3 = ["Vijendra","Singh","Shakya"]; The output array should have repeated words removed. How do I merge two arrays in JavaScript so that I get only the unique items from each array in the same order they were inserted into the original arrays? To just merge t

如何在JavaScript和de中合并两个数组

我有两个JavaScript数组: var array1 = ["Vijendra","Singh"]; var array2 = ["Singh", "Shakya"]; 我想要的输出是: var array3 = ["Vijendra","Singh","Shakya"]; 输出数组应该重复删除单词。 我如何在JavaScript中合并两个数组,以便我只按照插入原始数组的顺序从每个数组中获取唯一项目? 只需合并数组(不删除重复项) ES5版本使用Array.concat : var array1 = ["Vijendra","Singh"]; var array2 = ["Singh", "

How to download an excel file in Safari

Hello JavaScripters, I'm trying to download a blob file with type xlsx (excel) in Safari. I did this: obReader = new FileReader(); obReader.onload = function(e) { obdata = btoa(obReader.result); obDatauri = 'data:' + isbContentType + ';base64,' + obdata; window.location = obDatauri; }; obReader.readAsBinaryString(iobBLOB); This code above downloads pdf and txt files but when

如何在Safari中下载excel文件

你好JavaScripters, 我试图在Safari中下载一个类型为xlsx(excel)的blob文件。 我这样做了: obReader = new FileReader(); obReader.onload = function(e) { obdata = btoa(obReader.result); obDatauri = 'data:' + isbContentType + ';base64,' + obdata; window.location = obDatauri; }; obReader.readAsBinaryString(iobBLOB); 上面的代码下载pdf和txt文件,但是当我使用下载一个excel文件时,它不起

Why does JSON.stringify() accept Date objects?

At least in Firefox, you can stringify a Date object: >>> JSON.stringify({'now': new Date()}) '{"now":"2012-04-23T18:44:05.600Z"}' This works because (in Firefox) Date contains a toJSON method which is used by its JSON serializer. However, this is not part of the JSON standard so I wonder why this method exists or rather why the builtin JSON serializer checks for such a method. Since

为什么JSON.stringify()接受Date对象?

至少在Firefox中,您可以将Date对象串联起来: >>> JSON.stringify({'now': new Date()}) '{"now":"2012-04-23T18:44:05.600Z"}' 这是有效的,因为(在Firefox中) Date包含一个由其JSON序列化程序使用的toJSON方法。 然而,这不是JSON标准的一部分,所以我想知道为什么这个方法存在,或者为什么内置的JSON序列化程序检查这种方法。 由于它不是标准化的,如果内建序列化程序理解它并且使用自定义标记(如json2.js)

Format dates coming from Restful Service in Javascript

This question already has an answer here: How do I format a Microsoft JSON date? 37 answers 不知道如何解析日期,我无法在2016年附近找到它,但可以像这样格式化它const date = '/Date(-62135568000000)/' const zeroify = num => num < 10 ? '0' + num : num const monthify = month => { const months = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September',

在Javascript中使用来自Restful Service的日期格式

这个问题在这里已经有了答案: 如何格式化Microsoft JSON日期? 37个答案 不知道如何解析日期,我无法在2016年附近找到它,但可以像这样格式化它const date = '/Date(-62135568000000)/' const zeroify = num => num < 10 ? '0' + num : num const monthify = month => { const months = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', '...'] return month