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How to send FormData objects with Ajax-requests in jQuery? [duplicate]
...
fd.append( 'file', input.files[0] );
$.ajax({
url: 'http://example.com/script.php',
data: fd,
processData: false,
contentType: false,
type: 'POST',
success: function(data){
alert(data);
}
});
Notes:
Setting processData to false lets you prevent jQuery from automatically trans...
jQuery map vs. each
...emory.
For example:
var items = [1,2,3,4];
$.each(items, function() {
alert('this is ' + this);
});
var newItems = $.map(items, function(i) {
return i + 1;
});
// newItems is [2,3,4,5]
You can also use the map function to remove an item from an array. For example:
var items = [0,1,2,3,4,...
How to use radio on change event?
...ransfer':
alert("Transfer Thai Gayo");
break;
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input type="radio" name="bedStatus" id="allot" checked="checked" value="allot">Allot
<input type="radio" name="bedS...
Insert code into the page context using a content script
...
Underlying cause:
Content scripts are executed in an "isolated world" environment.
Solution::
To access functions/variables of the page context ("main world") you have to inject the code that wants to access them into the page itself. Same thing if yo...
Why is document.body null in my javascript?
...nt yet. In general, you want to create all elements before you execute javascript that uses these elements. In this case you have some javascript in the head section that uses body. Not cool.
You want to wrap this code in a window.onload handler or place it after the <body> tag (as mentioned ...
How to find out what character key is pressed?
...hat character key is pressed in a cross-browser compatible way in pure Javascript.
8 Answers
...
Cross Browser Flash Detection in Javascript
Does anyone have an example of script that can work reliably well across IE/Firefox to detect if the browser is capable of displaying embedded flash content. I say reliably because I know its not possible 100% of the time.
...
Which equals operator (== vs ===) should be used in JavaScript comparisons?
I'm using JSLint to go through JavaScript, and it's returning many suggestions to replace == (two equals signs) with === (three equals signs) when doing things like comparing idSele_UNVEHtype.value.length == 0 inside of an if statement.
...
Execute script after specific delay using JavaScript
Is there any JavaScript method similar to the jQuery delay() or wait() (to delay the execution of a script for a specific amount of time)?
...
低功耗蓝牙(BLE) 和 经典蓝牙(SPP) 的区别 · App Inventor 2 中文网
...模块价格低廉。
相比BLE价格稍高一些。
开发难度
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典型应用
可穿戴设备（智能手表、手环）、智能家居...