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Calc of max, or max of calc in CSS
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You can use JavaScript to get the computed style (actually the used style) of the element. Remove 80px from it and compare it to 500 to see which is greater. Something like var val = parseInt(window.getComputedStyle(el,null).getPropertyV...
click or change event on radio using jquery
...You must make sure that you initialized jquery above all other imports and javascript functions. Because $ is a jquery function. Even
$(function(){
<code>
});
will not check jquery initialised or not. It will ensure that <code> will run only after all the javascripts are initialized.
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Hide options in a select list using jQuery
... stores the array sequentially (since you can't have Associative Arrays in JavaScript). Then when you change the category, it parses the existing options (first time through only) writes them to #optionstore, erases everything, and puts back only the ones associated with the category.
NOTE: I creat...
What are valid values for the id attribute in HTML?
...tributes, but I would strongly suggest avoiding both.
In CSS (and several JavaScript libraries like jQuery), both the period and the colon have special meaning and you will run into problems if you're not careful. Periods are class selectors and colons are pseudo-selectors (eg., ":hover" for an ele...
How to make connection to Postgres via Node.js
...("Beatle birth year: %d", row.birthday.getYear()); //dates are returned as javascript dates
console.log("Beatle height: %d' %d\"", Math.floor(row.height / 12), row.height % 12); //integers are returned as javascript ints
});
//fired after last row is emitted
query.on('end', function() {
cli...
How can I detect whether an iframe is loaded?
...me' src='' /></iframe>
jsfiddle DEMO.
Update: Using plain javascript
window.onload=function(){
var ifr=document.getElementById('MainPopupIframe');
ifr.onload=function(){
this.style.display='block';
console.log('laod the iframe')
};
var btn=...
How can I detect if a browser is blocking a popup?
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If you use JavaScript to open the popup, you can use something like this:
var newWin = window.open(url);
if(!newWin || newWin.closed || typeof newWin.closed=='undefined')
{
//POPUP BLOCKED
}
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How to affect other elements when one element is hovered
...r. For more complicated scenarios, you'd need to use different CSS, or use JavaScript.
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A Better Django Admin ManyToMany Field Widget
...adding a ManyToManyField to this list will instead use a nifty unobtrusive JavaScript "filter" interface that allows searching within the options". filter_vertical does the same thing with a slightly different layout.
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Putting git hooks into repository
...set up the hooks in that directory for everyone working on your project.
JavaScript & NPM
For NPM there is a dependency called Husky which allows you to install hooks including ones written in JavaScript.
// package.json
{
"husky": {
"hooks": {
"pre-commit": "npm test",
"pr...