I want to take a string, and change each character. I.e. A becomes E or F becomes C.
what I have is this:
function convert(){
var text=document.getElementById('textInp').value;
alert(text);
for()
}
I don't know what to do in the for loop
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Strings are immutable in JS, so you can only create a new string. // How to get the character at a certain position is something you can research yourself. And then, in your loop you either append the original character or the replacement to your new string.C3roe– C3roe2017-05-19 10:16:17 +00:00Commented May 19, 2017 at 10:16
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5 Answers
You can iterate over each of the characters in the text like this
for (var x = 0; x < text.length; x++)
{
var c = text.charAt(x);
//Add code here to do the translation
}
2 Comments
Revolucion for Monica
Shouldn't it be
text.charAt(x) rater than string.charAt(x) ?
Colwin
You are correct @IggyPass. I've updated the code. Good eye! Thank you!
You can split and join your String
function convert(){
var text = document.getElementById('textInp').value;
alert(text);
text = text.split('A').join('E').split("F").join("C");
}
answered May 19, 2017 at 10:22
kevinSpaceyIsKeyserSöze
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Comments
Try this split("") split the string with space .and match the letter then replace using map
function convert(){
var text=document.getElementById('textInp').value;
console.log(text.split("").map(a=> a= a.toUpperCase() == 'A'? 'E':a.toUpperCase() == 'F'?'C':a ).join(""))
}<input id="textInp" value="AonFncdcd">
<button onclick="convert()">click</button>
Comments
There is a direct option to iterate over a string directly: to use for...of or for...in:
function convert(){
let text = document.getElementById('textInp').value;
for(let i in text) {
// Do something
console.info('i:', i, ' char: ', text[i])
}
}<input id="textInp" value="Your input">
<button onclick="convert()">click</button>
Comments
use string length and iterate and replace whatever you want.
for(var i=0 ; i < yourstring.length ; i++){
yourstring= yourstring.replace(yourstring[i],"yourvalue")
}
