Hey there! I'm in need of some assistance to correct my code so it can perform the task described in the text below:
function convertString(str) {
var parts = str.split('-');
for (var i = 1; i < parts.length; i++) {
return parts[i].charAt(0).toUpperCase() + parts[i].slice(1);
}
}
convertString("background-color") == 'backgroundColor'
convertString("list-style-image") == 'listStyleImage'
If you are looking to transform word combinations containing hyphens into camel-cased words, you can achieve this by using a regular expression combined with the String.replace method along with a function that capitalizes the letters following each hyphen.
function convertToCamelCase (str) {
return str.replace(/-(\w)/g, function (match) {
return match[1].toUpperCase();
});
}
convertToCamelCase("background-color");
// backgroundColor
convertToCamelCase("z-index");
// zIndex
convertToCamelCase("list-style-image");
// listStyleImage
Revise your code in the following way:
function transformStr(str) {
var words = str.split('-');
for (var j = 1; j < words.length; j++) {
words[j] = words[j].charAt(0).toUpperCase() + words[j].slice(1);
}
return words.join('');
}
It is important to wait for the loop to complete its iterations in order to get the correct result. One efficient way to achieve this is by using the Array.prototype.reduce method as shown below:
function transformString(str) {
return str.split('-').reduce(function(result, currentStr) {
return result + currentStr.charAt(0).toUpperCase() + currentStr.slice(1);
}, "");
}
console.log(transformString("background-color") === "backgroundColor");
# true
console.log(transformString("list-style-image") === "listStyleImage");
# true
It is important to store the concatenated results in a variable instead of returning them within a loop.
Additionally, remember to include the first element of the array when starting the loop at 1.
function camelize(str) {
var arr = str.split('-');
var result = arr[0];
for (var i = 1; i < arr.length; i++) {
result += arr[i].charAt(0).toUpperCase() + arr[i].slice(1);
}
return result;
}
alert(camelize("background-color"));
alert(camelize("list-style-image"));
Here is the link to the fiddle:
Ensure that you don't return from the entire function in the initial loop iteration. It's important to execute this process for each section before combining them:
function camelize(string) {
return string.split('-').map(function(part, i) {
return i ? part.charAt(0).toUpperCase() + part.slice(1) : part;
}).join("");
}
// alternatively
function camelize(string) {
return string.split('-').reduce(function(m, part) {
return m + part.charAt(0).toUpperCase() + part.slice(1);
});
}
// or
function camelize(string) {
var parts = string.split('-'),
result = ""
for (var i = 1; i < parts.length; i++) {
result += parts[i].charAt(0).toUpperCase() + parts[i].slice(1)
}
return result;
}
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