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I have a list of literals like this (These are unquoted strings - not variables):
alice-blue, antique-white, aqua, ...
And I want them to be quoted like this (For use in a nunjucks loop):
'alice-blue', 'antique-white', 'aqua', ...
Look for a simple way to do this in javascript.
var str = "alice-blue, antique-white, aqua";
var arr = str.split(', ');
for(var i=0; i< arr.length;i++){
arr[i] = "'"+arr[i]+"'";
}
var resultStr = arr.join(", ");
Related
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I want to convert array to object in javascript like
[["key1","ans1"],["key2","ans2"]] => {key1:"ans1",key2:"ans2"}
Here you go;
let res = {}
let arr = [["key1","ans1"],["key2","ans2"]]
for (let i = 0; i < arr.length; i++) {
res[arr[i][0]] = arr[i][1]
}
console.log(res)
please comment if you need explanation.
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how to do horizontal concatenation of two arrays in javascript?
var a = [[1,2],[3,4], [5,6]]
var b = [7,8,9]
I want output like :
c = [[1,2,7], [3,4,8], [5,6,9]]
You can use map and use index to access corresponding value from second array
var a = [[1,2],[3,4], [5,6]]
var b = [7,8,9]
let final = a.map((v,i)=> v.concat(b[i]))
console.log(final)
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Trying to generate a set of strings such as 'TCP', 'DNS' or 'SQL'
I want to be able to have these strings set and be able to have them appear randomly like you would with random numbers.
You can make an array and select them randomly:
const strings = ['TCP', 'DNS', 'SQL'];
for (var i = 0; i < 5; i++) {
console.log(`Random string: ${strings[Math.floor(Math.random() * strings.length)]}`);
}
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Let's say I have some variable that is probably a number.
Is it preferred to use String() or use a template literal to convert this variable to a string?
const n = 3.14;
let strN = String(n);
// OR
strN = `${n}`;
or does it not make any difference other than the obvious readability issues?
airbnb's styleguide suggests String(n).
// => this.reviewScore = 9;
// good
const totalScore = String(this.reviewScore);
airbnb Coercion: strings
You Don't Know JS - Types & Grammar: Coercion
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I wanna filter some words of a statement with javascript.
I have words must be filtered and words must be replaced :
var words = [
{'badword':/dog/, 'goodword':'1'},
{'badword':/gav/ , 'goodword':'5'},
{'badword':/folan/ , 'goodword':':6'}
// .
//.
//.
//and more
];
For Example I wanna /dog/ filter and 1 replaced.
How i can?
http://jsfiddle.net/billymoon/RF7Gm/1/
var text = "this is a dog called gav and a thing which is a folan here.";
var words = [
{'badword':/dog/, 'goodword':'1'},
{'badword':/gav/ , 'goodword':'5'},
{'badword':/folan/ , 'goodword':':6'}
];
for(var i=0;i<words.length;i++){
var word = words[i];
text = text.replace(word.badword, word.goodword);
};
alert(text);
Should output something like... this is a 1 called 5 and a thing which is a :6 here.