jquery

Why does jQuery or a DOM method such as getElementById not find the element?

由 十年热恋 提交于 2021-02-05 12:21:02
问题 What are the possible reasons for document.getElementById , $("#id") or any other DOM method / jQuery selector not finding the elements? Example problems include: jQuery silently failing to bind an event handler jQuery "getter" methods ( .val() , .html() , .text() ) returning undefined A standard DOM method returning null resulting in any of several errors: Uncaught TypeError: Cannot set property '...' of null Uncaught TypeError: Cannot read property '...' of null The most common forms are:

Javascript - How to create a keypress event?

由 心不动则不痛 提交于 2021-02-05 12:21:01
问题 I've looked on the internet for this and all I can find are depreciated functions so before posting please check to make sure that the code you suggest isn't depreciated. I've found this and tried it: https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/KeyboardEvent $(document).ready(function () { var x = new KeyboardEvent("FormatCode", deprectiatedArgument); }); But after further inspection the KeyboardEventInit is depreciated. I would like to create an event on pres of the CTRL +

Download a file by clicking a button

由 妖精的绣舞 提交于 2021-02-05 12:10:56
问题 This is the HTML: <button name="download">Download</button> I want users to download a file when they click this button. For that, I'm using the following Ajax request: $parent.find('button[name=download]').click(function () { $.ajax({ url: "download.php", sucess: function(data, status, jqXHR){ $console.text('Download efetuado'); }, error:function(xhr, status, error){ $console.text(xhr.responseText); } }); }); Where download.php is: if (file_exists($myFile)){ header ("Content-Type:

HTML element's value property is giving undefined value

由 三世轮回 提交于 2021-02-05 12:09:26
问题 This is totally mysterious. I checked everything, googled everything, but looks like this should work. I've done same things in my code with others html elements and they all give me the values, but this time I'm getting undefined for this particular HTML element. The snippet of code below: <div class="pianoKeyboard"> <button id="octaveUp" value="off">Octave Up</button> <button id="octaveDown" value="off">Octave Down</button> <div id="octaveNum" value='0'>Default</div> var octaveNumber =

Convert string to date and add 5 days to it

由 。_饼干妹妹 提交于 2021-02-05 12:00:45
问题 I have a string like so "2014-10-29" and Now I need to convert it to a date and add 5 days to it. I have this code that adds 5 days to the current date, but how would I convert that string to a date and add 5 days to it? var newDate = new Date(); newDate.setDate(newDate.getDate() + 5); var yyyy = newDate.getFullYear().toString(); var mm = (newDate.getMonth() + 1).toString(); var dd = newDate.getDate().toString(); var mmChars = mm.split(''); var ddChars = dd.split(''); var newClosingDate =

php curl get html and js render

由 ≡放荡痞女 提交于 2021-02-05 11:57:19
问题 php curl only get the source code of a html page without executing the js script. I need for my website to get the source code with all the javascript already executed. I use ajax and I can't add more js in the page because script stay when I load another page. I find spiderMonkey but it can't fix my problem. Is there something in php which do that ? Thank you 回答1: No you can't. Not from PHP directly. If you have control over the server you could install phantomjs and have it execute the code

Dynamic dropdown menu with bootstrap not working

由 这一生的挚爱 提交于 2021-02-05 11:54:20
问题 I have been using bootstrap for a while, and I came across an issue when trying to add a dropdown menu dynamically. This is the JavaScript that I have: $(document).ready(function() { $("#clickHere").click(function(){ $("#appendHere").html("<div class=\"dropdown\" style=\"display:inline;\"><a id=\"drop1\" href=\"#\" class=\"dropdown-toggle\" data-toggle=\"dropdown\"><b class=\"caret\"></b></a><ul class=\"dropdown-menu pull-left\"><li><button>Analyse Now</button></li><li class=\"divider\"></li>

Writing anonymous function in jQuery animation

由 為{幸葍}努か 提交于 2021-02-05 11:49:53
问题 Please help me to write the anonymous function in animation, I have given the code which I have tried, Here is the DEMO, I want to know how to write the anonymous function in animation like what I did in the Css button click, thank in advance <html> <head> <title></title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script> <style type="text/css"> #example{width:100px;height:100px;background

Writing anonymous function in jQuery animation

由 喜夏-厌秋 提交于 2021-02-05 11:49:36
问题 Please help me to write the anonymous function in animation, I have given the code which I have tried, Here is the DEMO, I want to know how to write the anonymous function in animation like what I did in the Css button click, thank in advance <html> <head> <title></title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script> <style type="text/css"> #example{width:100px;height:100px;background

querySelectorAll in Jquery

由 限于喜欢 提交于 2021-02-05 11:48:49
问题 Like the title how can I use DOM querySelectorAll() by jQuery. I am using final version of jQuery and Chrome browser For example: <ul> <li>new</li> <li>howler monkey</li> <li>pine marten</li> </ul> I tried $("li") but it just return the first li tag. -P/S: I have the answer to resolve this issue. I download jquery.js from jquery.com and linked to it but it just return the first li tag. $("li") <li>​new​</li>​ Then I used cdn link, it returns array result for me. I don't know why. $("li") (3)
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