is string javascript
function isString(value) {
return typeof value === 'string' || value instanceof String;
}
isString(''); // true
isString(1); // false
isString({}); // false
isString([]); // false
isString(new String('teste')) // trueis string javascript
function isString(value) {
return typeof value === 'string' || value instanceof String;
}
isString(''); // true
isString(1); // false
isString({}); // false
isString([]); // false
isString(new String('teste')) // truechaine de texte javascript
var a = "a";
var b = "b";
if (a < b) { // true
console.log(a + " est inférieure à " + b);
} else if (a > b) {
console.log(a + " est supérieure à " + b);
} else {
console.log(a + " et " + b + " sont égales.");
}js string methods
JS String Methods:
charAt()
Returns a character at a specified position inside a string
charCodeAt()
Gives you the unicode of character at that position
concat()
Concatenates (joins) two or more strings into one
fromCharCode()
Returns a string created from the specified sequence of UTF-16 code units
indexOf()
Provides the position of the first occurrence of a specified text within a string
lastIndexOf()
Same as indexOf() but with the last occurrence, searching backwards
match()
Retrieves the matches of a string against a search pattern
replace()
Find and replace specific text in a string
search()
Executes a search for a matching text and returns its position
slice()
Extracts a section of a string and returns it as a new string
split()
Splits a string object into an array of strings at a specified position
substr()
Similar to slice() but extracts a substring depended on a specified number of characters
substring()
Also similar to slice() but can’t accept negative indices
toLowerCase()
Convert strings to lowercase
toUpperCase()
Convert strings to uppercase
valueOf()
Returns the primitive value (that has no properties or methods) of a string objectjs string
`hello world`
`hello!
world!`
`hello ${who}`
escape `<a>${who}</a>`javascript string
let txt = "frsbsda";
txt.length // Returns 26javascript string
const string1 = "A string primitive";
const string2 = 'Also a string primitive';
const string3 = `Yet another string primitive`;Copyright © 2021 Codeinu
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