# JavaScript Standard Properties and Functions¶

These standard JavaScript functions—part of ECMA-262 v5.1—are supported in Jitterbit JavaScripts.

Note

- The maximum number of loop iterations allowed in Jitterbit Harmony is 50,000.
- The maximum number of loop iterations in Jitterbit Script Language is per each individual loop. To increase the allowed number of iterations per loop in a Jitterbit Script Language script, see jitterbit.scripting.while.max_iterations in Scripting Jitterbit Variables.
- The maximum number of loop iterations in JavaScript is per script (aggregate of all loops within one script). To increase the maximum number of loop iterations in JavaScript, see Java Script Loop in JavaScript.

## JavaScript Array Properties and Functions¶

Array Property | Description |
---|---|

`array.constructor` | Returns the function that creates the Array object's prototype |

`array.length` | Returns the length of an array |

`Array.prototype` | The object that allows adding properties and methods to an Array object |

Array Function | Description |
---|---|

`array.concat()` | Joins two or more arrays, returning a copy of the joined arrays |

`array.every()` | Checks if every element in an array pass a test (function) |

`array.filter()` | Creates a new array with every element in an array that pass a test (function) |

`array.forEach()` | Calls a function for each element in an array |

`array.indexOf()` | Searches an array for an element and returns its position |

`Array.isArray()` | Checks if an object is an array |

`array.join()` | Joins all the elements of an array into a string |

`array.lastIndexOf()` | Searches an array for an element, starting at the end, and returns its position |

`array.map()` | Creates a new array with the result of calling a function for each element in an array |

`array.pop()` | Removes the last element of an array and returns that element |

`array.push()` | Adds new elements at the end of an array and returns the new length |

`array.reduce()` | Reduces the values of an array to a single value (from left-to-right) |

`array.reduceRight()` | Reduces the values of an array to a single value (from right-to-left) |

`array.reverse()` | Reverses the order of the elements in an array |

`array.shift()` | Removes the first element of an array, and returns that element |

`array.slice()` | Selects a portion of an array and returns the new array |

`array.some()` | Checks if any of the elements in an array pass a test (function) |

`array.sort()` | Sorts the elements of an array |

`array.splice()` | Adds or removes elements from an array |

`array.toLocaleString()` | Converts an array to a string and returns the result, using locale conventions |

`array.toString()` | Converts an array to a string and returns the result |

`array.unshift()` | Adds new elements to the beginning of an array and returns the new length |

`array.valueOf()` | Returns the primitive value of an array |

## JavaScript Date Properties and Functions¶

Warning

ECMA-262 v5.1 has issues with the handling of dates and daylight savings time. Be aware of these if using these functions.

Date Property | Description |
---|---|

`date.constructor` | Returns the function that creates the Array object's prototype |

`Date.prototype` | The object that allows adding properties and methods to a Date object |

Date Function | Description |
---|---|

`date.getDate()` | Returns the day of the month (from 1-31) |

`date.getDay()` | Returns the day of the week (from 0-6) |

`date.getFullYear()` | Returns the year |

`date.getHours()` | Returns the hour (from 0-23) |

`date.getMilliseconds()` | Returns the milliseconds (from 0-999) |

`date.getMinutes()` | Returns the minutes (from 0-59) |

`date.getMonth()` | Returns the month (from 0-11) |

`date.getSeconds()` | Returns the seconds (from 0-59) |

`date.getTime()` | Returns the number of milliseconds since midnight January 1 1970, and a specified date |

`date.getTimezoneOffset()` | Returns the time difference between UTC time and local time, in minutes |

`date.getUTCDate()` | Returns the day of the month, according to universal time (from 1-31) |

`date.getUTCDay()` | Returns the day of the week, according to universal time (from 0-6) |

`date.getUTCFullYear()` | Returns the year, according to universal time |

`date.getUTCHours()` | Returns the hour, according to universal time (from 0-23) |

`date.getUTCMilliseconds()` | Returns the milliseconds, according to universal time (from 0-999) |

`date.getUTCMinutes()` | Returns the minutes, according to universal time (from 0-59) |

`date.getUTCMonth()` | Returns the month, according to universal time (from 0-11) |

`date.getUTCSeconds()` | Returns the seconds, according to universal time (from 0-59) |

`date.getFullYear()` | Returns the full year |

`Date.now()` | Returns the number of milliseconds since midnight January 1, 1970 |

`Date.parse()` | Parses a date string and returns the number of milliseconds since midnight January 1, 1970 |

`date.setDate()` | Sets the day of the month of a Date object |

`date.setFullYear()` | Sets the year of a Date object |

`date.setHours()` | Sets the hour of a Date object |

`date.setMilliseconds()` | Sets the milliseconds of a Date object |

`date.setMinutes()` | Set the minutes of a Date object |

`date.setMonth()` | Sets the month of a Date object |

`date.setSeconds()` | Sets the seconds of a Date object |

`date.setTime()` | Sets a date of a Date object to a specified number of milliseconds after/before January 1, 1970 |

`date.setUTCDate()` | Sets the day of the month of a Date object, according to universal time |

`date.setUTCFullYear()` | Sets the year of a Date object, according to universal time |

`date.setUTCHours()` | Sets the hour of a Date object, according to universal time |

`date.setUTCMilliseconds()` | Sets the milliseconds of a Date object, according to universal time |

`date.setUTCMinutes()` | Set the minutes of a Date object, according to universal time |

`date.setUTCMonth()` | Sets the month of a Date object, according to universal time |

`date.setUTCSeconds()` | Set the seconds of a Date object, according to universal time |

`date.toDateString()` | Converts the date portion of a Date object into a readable string |

`date.toISOString()` | Returns a date as a string, using the ISO standard |

`date.toJSON()` | Returns a date as a string, formatted as a JSON date |

`date.toLocaleDateString()` | Returns the date portion of a Date object as a string, using locale conventions |

`date.toLocaleTimeString()` | Returns the time portion of a Date object as a string, using locale conventions |

`date.toLocaleString()` | Converts a Date object to a string, using locale conventions |

`date.toString()` | Converts a Date object to a string |

`date.toTimeString()` | Converts the time portion of a Date object to a string |

`date.toUTCString()` | Converts a Date object to a string, according to universal time |

`Date.UTC()` | Returns the number of milliseconds in a date since midnight January 1, 1970, according to UTC time |

`date.valueOf()` | Returns the primitive value of a Date object |

## JavaScript Math Properties and Functions¶

Math Property | Description |
---|---|

`Math.E` | Returns Euler's number (about 2.71828182845905) |

`Math.LN2` | Returns the natural logarithm of 2 (about 0.693147180559945) |

`Math.LN10` | Returns the natural logarithm of 10 (about 2.30258509299405) |

`Math.LOG2E` | Returns the base-2 logarithm of e (about 1.44269504088896) |

`Math.LOG10E` | Returns the base-10 logarithm of e (about 0.434294481903252) |

`Math.PI` | Returns π (about 3.14159265358979) |

`Math.SQRT1_2` | Returns the square root of 1/2 (about 0.707106781186548) |

`Math.SQRT2` | Returns the square root of 2 (about 1.4142135623731) |

Math Function | Description |
---|---|

`Math.abs(x)` | Returns the absolute value of x |

`Math.ceil(x)` | Returns x rounded up to the nearest integer |

`Math.exp(x)` | Returns the value of e^{x} |

`Math.floor(x)` | Returns x rounded down to the nearest integer |

`Math.max(x, y, z)` | Returns the number with the lowest value |

`Math.min(x, y, z)` | Returns the number with the highest value |

`Math.pow(x, y)` | Returns the value of x to the power of y |

`Math.random()` | Returns a random number between 0 and 1 |

`Math.sqrt(x)` | Returns the square root of x |

`Math.acos(x)` | Returns the arccosine of x (where x is in radians) |

`Math.asin(x)` | Returns the arcsine of x (where x is in radians) |

`Math.atan(x)` | Returns the arctangent of x as a numeric value between -π/2 and π/2 radians |

`Math.atan2(y, x)` | Returns the arctangent of the quotient of its arguments |

`Math.cos(x)` | Returns the cosine of x (where x is in radians) |

`Math.log(x)` | Returns the natural logarithm (base e) of x |

`Math.round(x)` | Rounds x to the nearest integer |

`Math.sin(x)` | Returns the sine of x (where x is in radians) |

`Math.tan(x)` | Returns the tangent of x (where x is in radians) |

## JavaScript String Properties and Functions¶

String Property | Description |
---|---|

`string.constructor` | Returns the function that creates the String object's prototype |

`string.length` | Returns the length of a string |

`String.prototype` | The object that allows adding properties and methods to a String object |

String Function | Description |
---|---|

`string.charAt()` | Returns the character at the specified index (position) |

`string.charCodeAt()` | Returns the Unicode of the character at the specified index |

`string.concat()` | Joins two or more strings, and returns a new joined strings |

`string.endsWith()` | Checks whether a string ends with specified string/characters |

`string.indexOf()` | Returns the position of the first found occurrence of a specified value in a string |

`string.lastIndexOf()` | Returns the position of the last found occurrence of a specified value in a string |

`string.localeCompare()` | Compares two strings in the current locale |

`string.match()` | Searches a string for a match against a regular expression, and returns the matches |

`string.replace()` | Searches a string for a specified value, or a regular expression, and returns a new string where the specified values are replaced |

`string.search()` | Searches a string for a specified value, or regular expression, and returns the position of the match |

`string.slice()` | Extracts a part of a string and returns a new string |

`string.split()` | Splits a string into an array of substrings |

`string.startsWith()` | Checks whether a string begins with specified characters |

`string.substr()` | Extracts the characters from a string, beginning at a specified start position, and through the specified number of character |

`string.substring()` | Extracts the characters from a string, between two specified indices |

`string.toLocaleLowerCase()` | Converts a string to lowercase letters, according to the host's locale |

`string.toLocaleUpperCase()` | Converts a string to uppercase letters, according to the host's locale |

`string.toLowerCase()` | Converts a string to lowercase letters |

`string.toString()` | Returns the value of a String object |

`string.toUpperCase()` | Converts a string to uppercase letters |

`string.trim()` | Removes whitespace from both ends of a string |

`string.valueOf()` | Returns the primitive value of a String object |