will have the same effect using “native” code. Edit Since this gets a lot of views, note (per @oriol’s comment) that the following more concise expression is effectively equivalent: But note per @JussiR’s comment, that unlike the “verbose” form, it does create an empty, unused, and indeed unusable array instance in the process. What compilers do about … Read more
You can do: Usage example: Output: Demo on JSFiddle: http://jsfiddle.net/abdulrauf6182012/2Frm3/
You don’t necessarily need jQuery. JavaScript alone will do this. The c variable will be minor if the value is true, and major if the value is false. This is known as a Conditional (ternary) Operator. https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Operators/Conditional_Operator
If you just want to check whether there’s a truthy value, you can do: If you need to check specifically for an empty string over null, I would think checking against “” is your best bet, using the === operator (so that you know that it is, in fact, a string you’re comparing against).
When you call an inline event handler such as you do with onmouseover=”MouseOver(this);” you’re passing a reference to the element itself to your function, and in your function you’re taking that reference and assigning it to the variable elem. You would then normally use elem within your function like elem.style.color = “white”;, not with parenthesis, as you’re not running a function … Read more
When you call an inline event handler such as you do with onmouseover=”MouseOver(this);” you’re passing a reference to the element itself to your function, and in your function you’re taking that reference and assigning it to the variable elem. You would then normally use elem within your function like elem.style.color = “white”;, not with parenthesis, as you’re not running a function … Read more
Since 1.8.5 it’s possible to seal and freeze the object, so define the above as: or and voila! JS enums. However, this doesn’t prevent you from assigning an undesired value to a variable, which is often the main goal of enums: One way to ensure a stronger degree of type safety (with enums or otherwise) is … Read more
There’s no built-in ability to break in forEach. To interrupt execution you would have to throw an exception of some sort. eg. Run code snippetExpand snippet JavaScript exceptions aren’t terribly pretty. A traditional for loop might be more appropriate if you really need to break inside it. Use Array#some Instead, use Array#some: Run code snippetExpand snippet This works because some returns true as soon as any of the … Read more
There’s no built-in ability to break in forEach. To interrupt execution you would have to throw an exception of some sort. eg. Run code snippetExpand snippet JavaScript exceptions aren’t terribly pretty. A traditional for loop might be more appropriate if you really need to break inside it. Use Array#some Instead, use Array#some: Run code snippetExpand snippet This works because some returns true as soon as any of the … Read more
I want to swipe left or right using jquery mobile. When I click the swipe left it opens the drawer and on right it closes the drawer. Currently I press the upper button and menu function is used to open menu I want to do it by using swipe function in jquery. Please help Html … Read more