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What is JSON and why would I use it?
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JSON (JavaScript Object Notation) is a lightweight format that is used for data interchanging. It is based on a subset of JavaScript language (the way objects are built in JavaScript). As stated in the MDN, some JavaScript is not JSON...
Calling a parent window function from an iframe
I want to call a parent window JavaScript function from an iframe.
10 Answers
10
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What are some methods to debug Javascript inside of a UIWebView?
I'm trying to figure out why something with Javascript isn't working inside of a UIWebView. To my knowledge, there is no way to set a breakpoint inside of XCode for a js file. No problemo, I'll just go back to 2004 and use alert statemen-- oh wait they don't seem to work inside of a UIWebView either...
Google Tag Manager 入门指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...把如下的脚本放到网站全局的页脚，如：footer.inc：
<script type=”text/javascript”>
var _gaq = _gaq || [];
_gaq.push(["_setAccount", "UA-XXXXXX-1"]);
_gaq.push(["_trackPageview"]);
(function() {
var ga = document.createElement(“script”); ga.type = “text/javasc...
JavaScript - onClick to get the ID of the clicked button
...tton id="3" onClick="reply_click(this.id)">B3</button>
<script type="text/javascript">
function reply_click(clicked_id)
{
alert(clicked_id);
}
</script>
This will send the ID this.id as clicked_id which you can use in your function. See it in actio...
How to allow to accept only image files?
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Steps:
1. Add accept attribute to input tag
2. Validate with javascript
3. Add server side validation to verify if the content is really an expected file type
For HTML and javascript:
<html>
<body>
<input name="image" type="file" id="fileName" accept=".jpg,.jpeg,.png" onc...
Difference between jQuery `click`, `bind`, `live`, `delegate`, `trigger` and `on` functions (with an
...k">A link!</a>
<a id="another">Another link!</a>
<script>
$("a.myLink").click( function() { alert( 'Click!' ); } );
$("a#another").addClass( "myLink" );
</script>
After the second line of the script executes, the second link will also have a CSS class of ...
Access event to call preventdefault from custom function originating from onclick attribute of tag
...ime() / 1000);"
href="http://www.domain.com/docs/thingy.pdf">
If JavaScript is enabled, it opens the PDF with a cache busting query string, if not it just opens the PDF.
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What is the JavaScript equivalent of var_dump or print_r in PHP? [duplicate]
I would like to see the structure of object in JavaScript (for debugging). Is there anything similar to var_dump in PHP?
9 ...
jQuery AJAX submit form
...ta)
{
alert(data); // show response from the php script.
}
});
});
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