If I have a string loaded into a variable, what's the appropriate method to use to determine if the string ends in "/" forward slash?
var myString = jQuery("#myAnchorElement").attr("href");
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jQuery cannot do that. However, JavaScript can.Felix Kling– Felix Kling2013-02-08 16:19:28 +00:00Commented Feb 8, 2013 at 16:19
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possible duplicate of how to get the last character of a string?Felix Kling– Felix Kling2013-02-08 16:20:46 +00:00Commented Feb 8, 2013 at 16:20
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6 Answers
A regex works, but if you want to avoid that whole cryptic syntax, here's something that should work: javascript/jquery add trailing slash to url (if not present)
var lastChar = url.substr(-1); // Selects the last character
if (lastChar !== '/') { // If the last character is not a slash
...
}
Comments
Use regex and do:
myString.match(/\/$/)
Comments
A simple solution would be to just check the last character via:
var endsInForwardSlash = myString[myString.length - 1] === "/";
EDIT: Keep in mind, you would need to check that the string is not null first to keep from throwing an exception.
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You can use substring and lastIndexOf:
var value = url.substring(url.lastIndexOf('/') + 1);
Comments
You don't need JQuery for that.
function endsWith(s,c){
if(typeof s === "undefined") return false;
if(typeof c === "undefined") return false;
if(c.length === 0) return true;
if(s.length === 0) return false;
return (s.slice(-1) === c);
}
endsWith('test','/'); //false
endsWith('test',''); // true
endsWith('test/','/'); //true
You can also write a prototype
String.prototype.endsWith = function(pattern) {
if(typeof pattern === "undefined") return false;
if(pattern.length === 0) return true;
if(this.length === 0) return false;
return (this.slice(-1) === pattern);
};
"test/".endsWith('/'); //true
Comments
Now you can do that already natively with modern javascript:
mystring.endswith('/')
This feature has been introduced since ES2015 and works well in all browsers.
