Looking to develop a JavaScript function that checks if the last characters of a string match a given target. The function must utilize the .substr() method for this purpose.
function endOfString(str, target) {
let endCharacters = str.substr(-target.length);
if (endCharacters === target) {
return true;
} else {
return false;
}
}
console.log(endOfString('Bastian', 'n'));
Give it a shot:
function checkEndOfString(str, target) {
return str.substring(str.length-target.length) == target;
}
UPDATE:
If you're using modern browsers, you can utilize: string.prototype.endsWith. However, for Internet Explorer, a polyfill is necessary (you can explore which provides the polyfill and does not serve any content to newer browsers; it's also beneficial for other IE-related functions).
Starting from ES6, it is now possible to utilize the endsWith() method on strings. Here's an example:
let mystring = 'exampleString';
//this should return true
console.log(mystring.endsWith('String'));
//this should return true
console.log(mystring.endsWith('g'));
//this should return false
console.log(mystring.endsWith('example'));Give this a shot...
function checkEnd(str, target) {
var strLength = str.length;
var tarLength = target.length;
var remaining = strLength - tarLength;
strEnd = str.substr(remaining);
if (strEnd == target){
return true;
}else{
return false;
}
return str;
}
checkEnd('Bastian', 'n');
Give this a shot:
function checkEnd(str, target) {
return str.slice(-target.length) === target;
}
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