markdown Shorthands和替代语法

Posted 2021-05-06

## PHP
#### If-else
```php
(condition) ? valuetrue : valuefalse;
```
```php
($isik1['age'] < $isik2['age']) ? -1 : 1;    //returns -1 if true, 1 if false
        
```
#### Switch or While:  
```php
switch ($i){      //or while

}
```
```php
switch ($i):      //or while

endswitch;        //or endwhile
```
#### Accessing array:
```php
$myArr[0]
```
```php
$myArr{0}
```  
<br>
## Javascript
#### Accessing element by ID:
```js
elementID
```
<font size="2" color="gainsboro">Example:</font>
```html
<span id='unicorn'>rainbow</span>   //changes rainbow to sparkly
```
```js
unicorn.innerHTML = 'sparkly';
```

#### Accessing arrays and objects:
```js
myArr[0]
```
```js
myObj["propertyName"]
```
```js
myObj.propertyName
```
```js
myObj.methodName()
```

#### If-else + function boolean return
```
function myFunction() {
  return hours < 24 && minutes < 60 && seconds < 60;
}
```
<font size=2 color=gainsboro>Longer version:</font>
```
function myFunction() {
  if (hours < 24 && minutes < 60 && seconds < 60)
      return true;
  else 
      return false;
}
```
#### If-else + variable boolean  
```
var myVariable = hours < 24 && minutes < 60 && seconds < 60;
```
<font size=2 color=gainsboro>Longer version:</font>
```
var myVariable;
if (hours < 24 && minutes < 60 && seconds < 60) 
    myVariable = true;
else 
    myVariable = false;
```
#### Ternary operator (variable example)  
```js
if (!maxOptions) {
  maxOptions = (type == 'number') ? chosenOptions : (!getOptionRange[2] ? minOptions : countOptions);    //all braces can be removed (at the cost readability)  
}
```
<font size=2 color=gainsboro>Longer version:</font>
```
if (!maxOptions) {
  if (type == 'number') {	
    maxOptions = chosenOptions;
  }
  else if (!getOptionRange[2]) {
    maxOptions = minOptions;
  }
  else {
    maxOptions = countOptions;
  }
}
```