大约有 10,000 项符合查询结果(耗时:0.0196秒) [XML]

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How do I know which version of Javascript I'm using?

I'm just reading this documentation about Javascript 1.2, but I'm wondering which version of Javascript is being used in the most popular browsers. ...
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window.onload vs

...me event. Using window.onload is less obtrusive though - it takes your JavaScript out of the HTML. All of the common JavaScript libraries, Prototype, ExtJS, Dojo, JQuery, YUI, etc. provide nice wrappers around events that occur as the document is loaded. You can listen for the window onLoad event, ...
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How to have jQuery restrict file types on upload?

... checking with PHP already. I am running my submit button through a JavaScript function already so I really just need to know how to check for the file types before submit or alert. ...
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How do I update pip itself from inside my virtual environment?

...ke that: python -m pip install --upgrade pip to avoid running pip.exe from scripts directory. – bialix Feb 19 '14 at 14:47 ...
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Get selected value of a dropdown's item using jQuery

...ck(function(){ alert($('#combo :selected').text()); }); }); <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <select id="combo"> <option value="1">Test 1</option> <option value="2">Test 2</option> &l...
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Simplest SOAP example

What is the simplest SOAP example using Javascript? 13 Answers 13 ...
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Class vs. static method in JavaScript

... First off, remember that JavaScript is primarily a prototypal language, rather than a class-based language1. Foo isn't a class, it's a function, which is an object. You can instantiate an object from that function using the new keyword which will allow y...
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How can I round down a number in Javascript?

How can I round down a number in JavaScript? 11 Answers 11 ...
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POST data in JSON format

...ome data that I need to convert to JSON format and then POST it with a JavaScript function. 4 Answers ...
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Check if a user has scrolled to the bottom

...as per the documentation from MDN, the simplest way is by using native javascript properties: element.scrollHeight - element.scrollTop === element.clientHeight Returns true when you're at the bottom of any scrollable element. So simply using javascript: element.addEventListener('scroll', functio...