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function isNumeric(n) { | |
return !isNaN(parseFloat(n)) && isFinite(n); | |
} |
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function getDecimal(num) { | |
var result; | |
var initialNum = Math.abs(num); | |
var roundedNum = Math.round(initialNum); | |
if (roundedNum > initialNum) { | |
result = roundedNum - initialNum - 1; | |
result = Math.abs(result); | |
result = +result.toFixed(10); | |
} |
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function ucFirst(str) { | |
// только пустая строка в логическом контексте даст false | |
if (!str) return str; | |
return str[0].toUpperCase() + str.slice(1); | |
} |
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function checkSpam(str) { | |
var firstWord = 'viagra'; | |
var secondWord = 'xxx'; | |
var string = str.toLowerCase(); | |
var result; | |
if (checkTheWord(firstWord) || checkTheWord(secondWord)) { | |
return true; | |
} | |
return false; |
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function truncate(str, maxlength) { | |
if (str.length > maxlength) { | |
return str.slice(0, maxlength - 3) + '...'; | |
} | |
} |
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function isNumeric(n) { | |
return !isNaN(parseFloat(n)) && isFinite(n) | |
} | |
function multiplyNumeric(obj) { | |
for (var i in obj) { | |
if (isNumeric(obj[i])) { | |
obj[i] *= 2; | |
} | |
} |
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function isEmpty(obj) { | |
var counter = 0; | |
for (var key in obj) { | |
counter++; | |
} | |
if (counter == 0) { | |
return true; | |
} | |
else { | |
return false; |
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function showRnd(arr) { | |
var min = 0; | |
var max = arr.length - 1; | |
var rand = min + Math.floor(Math.random() * (max + 1 - min)); | |
return arr[rand]; | |
} |
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function find(arr, value) { | |
var i; | |
var searchFalse = -1; | |
for (i = 0; i<arr.length; i++) { | |
if (arr[i] === value) { | |
return i; | |
} | |
} | |
return searchFalse; |
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function filterRange(arr, a, b) { | |
var i = 0; | |
var result = []; | |
for (i = 0; i<arr.length; i++) { | |
if (arr[i] >= a && arr[i] <= b) { | |
result.push(arr[i]); | |
} | |
} | |
return result; |
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