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i want remove all ',' from my string with regex in javascript.
this is an example from my string:
45,454,545
and i want my string convert to this:
45454545
Comma isn't a special character in regex, so you can just use /,/. Add the global flag and you're done.
console.log('45,454,545'.replace(/,/g, ''))
Try this,
var str = "45,454,545";
var res = str.replace(/,/g, "");
console.log(res);
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I'm using React (hooks) and in a component I have postcodes with a space in them in strings:
eg "B72 1JL".
I need to remove the space in the middle of the postcodes so it is "B721JL" and also possibly any spaces before or after the postcode.
I've googled for ages and cannot find anything that will work. I know i probably need regex...but pretty confused!
Help appreciated.
Use String.prototype.replace() to change the space for an empty space.
const str = "B72 1JL";
// Replacing " " (space) to "" empty space
const res = str.replace(/ /g, '')
console.log(res); // BJ721JL
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I am willing to know how can I check if the a phone number contain the following prefixes +44, 0044 or 0 and if so it will be removed? I know I to remove a number of characters or a substring but how do I check if that substring is in the beginning?
Thanks in advance
You could with regex /^(\+44|0044|0)/g
function rem(str){
return str.replace(/^(\+44|0044|0)/g,'')
}
console.log(rem('0044987987'));
console.log(rem('04478687'));
console.log(rem('+447783'));
You can use indexOf to check the index of those prefix.
"+44-----".indexOf("+44") // returns 0
That should be enough for what you want.
You can simply test against a regex pattern.
Or use it for a replace.
const re_tel44 = /^[+]?0{0,2}(?:44)?(\d{5,})$/;
let phonenumber = '+4412345';
console.log(re_tel44.test(phonenumber));
if(re_tel44.test(phonenumber))
phonenumber = phonenumber.replace(re_tel44, '$1');
console.log(phonenumber);
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I want the text which is outside of brackets, for eg.
Text is - Outside (inside)
and what I expect is - Outside
Can someone please help me to achieve this.
You can use slice & use indexOf to get the first (. This will extract all the characters before first (
let str = 'Outside (inside)'
let substr = str.slice(0, str.indexOf('('));
console.log(substr.trim())
If you wanted to remove all bracketed text from the string you could use
let str = 'Outside (inside)test(d 342 dd3d)dd(t423t t)dd()fasf(fsdfds32dfs)';
console.log(str.replace(/(\([\w\d ]*\))+/g, ''))
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I have a string like that header#top.header.header--show-offset and I'm struggling to know how could I split it into something like [ 'header', '#top', '.header', '.header--show-offset' ]
Thank you!
You can use regex:
let str ="header#top.header.header--show-offset";
// Keep the delimiter
let res = str.split(/(?=[#.])/gi);
console.log(res);
I would do this in two steps:
Replace id and class symbols with a comma and then the symbol
Split the resulting string by comma
var selectorString = "header#top.header.header--show-offset";
selectorString = selectorString.replace(/#/g, ",#")
selectorString = selectorString.replace(/\./g, ",.");
var selectorList = selectorString.split(",");
console.log(selectorList);
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I need to split${SOMENAME} (${THISNAME}) ${THESENAME}
I just need to extract the words SOMENAME THISNAME and THESENAME from the above string. Is it possible?
You can pass in a regular expression separator as part of the .split() function.
var string = "${SOMENAME} (${THISNAME}) ${THESENAME}";
var re = /\W+/;
var arr = string.split(re);
document.write(arr);
Take a look at String.prototype.split for more information.
If you only need extract the words, this could be a simple solution:
var s = "${SOMENAME} (${THISNAME}) ${THESENAME}";
var words = s.match(/([A-Z])\w+/g);