google+javascriptbanktwitter@js_bankfacebook@jsbankrss@jsbank
Guest, register






Essential Guidelines of Helpful JavaScript Shorthand codes Organize the source codes of JavaScript applications and web applications with minifying JS solution (shorthand) is one of most important methods to optimize the web performance. This JavaScript article tutorial guides you some basic JavaScript tips and tricks to shorten your JavaScript source with shorthand codes. Some objects discussed during this JavaScript tutorial: JavaScript variable increment/decrement/multiply/divide, ternary operator (conditional), associative array notation, default assignments.

Try more JavaScript article tutorials for source code optimization if you still need:
- Efficient and Helpful JavaScript/jQuery Tips and Tricks
- Some Basic JavaScript Guidelines for Accessibility


Free iPage Web Hosting for First Year NOW



If you're still looking for a reliable web host provider with affordable rates, why you don't take a little of time to try iPage, only with $1.89/month, included $500+ Free Extra Credits for the payment of 24 months ($45)?

Over 1,000,000+ existisng customers can not be wrong, definitely you're not, too! More important, when you register the web hosting at iPage through our link, we're going to be happy for resending a full refund to you. That's awesome! You should try iPage web hosting for FREE now! And contact us for anything you need to know about iPage.
Try iPage for FREE First Year NOW

A few ways to save on some bytes in your Javascript code, as well as making it more readable and quicker to write:

Variable increment/decrement/multiply/divide

When you want to increase or decrease a number variable by one; instead of this:

growCount = growCount + 1;
shrinkCount = shrinkCount - 1;

You can simply do the following:

growCount ++;
shrinkCount --;

Or to add/subtract/multiply/divide a number to/from/by itself you can do:

growCout += 100;
shrinkCount -= 2;

moreSweets *= 5; // multiply moreSweets by 5
lessApple /= 2; // divide lessApple by 2

Ternary operator (conditional)

This is a great code saver for when you want to do something if the test is true, else do something else:

if(myAge > legalAge) {
    canDrink = true;
}
else {
    canDrink = false;
}

Instead, put the condition before the question mark then the if true statement and false statement after that separated by a colon:

var canDrink = (myAge > legalAge) ? true : false;
As pointed out in the comments, the above example can be further simplified to var canDrink = myAge > legalAge because it's returning a boolean.

Associative array notation

The old school way of setting up an array was to create a named array and then add each named element one by one:

var skillSet = new Array();
skillSet['Document language'] = 'HTML5';
skillSet['Styling language'] = 'CSS3';
skillSet['Javascript library'] = 'jQuery';
skillSet['Other'] = 'Usability and accessibility';

A quicker and more readable way is to add the elements at the same time using the object literal notation to become:

var skillSet = {
    'Document language' : 'HTML5',
    'Styling language' : 'CSS3',
    'Javascript library' : 'jQuery',
    'Other' : 'Usability and accessibility'
};

Don't forget to omit the final comma otherwise certain browsers will complain.

Default assignments

The following is useful if you are testing if a variable has previously been set and if not to try something else:

function displayValues(limit) {
    var length;
    if(limit) {
        length = limit;
    } else {
        length = 10;
    }
    for(var i = 0; i++; i < = length) {
        ...
}

A shorter way is to use the double pipe. If limit has not been passed to the function then length will be set to the default of 10:

function displayValues(limit) {
    var length = limit || 10;
    for(var i = 0; i < = length; i++) {
        ...
}
The variable length will be set to the value of the left operand if it evaluates to true, therefore anything other than the following:
  • false
  • 0
  • null
  • undefined
  • empty string

Otherwise it will be set to the value of the right operand. So this isn't the right thing to use if you need to explicitly set the length to zero.

iPhoneKer.com
Save up to 630$ when buy new iPhone 15

GateIO.gomymobi.com
Free Airdrops to Claim, Share Up to $150,000 per Project

https://tooly.win
Open tool hub for free to use by any one for every one with hundreds of tools

chatGPTaz.com, chatGPT4.win, chatGPT2.fun, re-chatGPT.com
Talk to ChatGPT by your mother language

Dall-E-OpenAI.com
Generate creative images automatically with AI

AIVideo-App.com
Render creative video automatically with AI

JavaScript by day


Google Safe Browsing McAfee SiteAdvisor Norton SafeWeb Dr.Web