How to put the first letter capitalized and the rest lowercase? [JS]
1) I'm trying to apply the first letter in uppercase and the other as lowercase . If the user write in the input, it should automatically transform. Examples:
"isaac guilherme araújo" to "Isaac Guilherme Araújo"
"iSAAC guILHErme aRAÚJO" to "Isaac Guilherme Araújo"
2) In Brazil there are names with connectives. Examples: "das" "da" "dos" "do" "de" "e".
Carlos Eduardo Julio dos Santos
Carlos Eduardo dos Santos e Silva
Carlos Eduardo da Silva
3) I am having this problem to work with the name fields. With the following code, i could apply the first letter in uppercase, but the others as lowercase i couldn't. Then, according to problem number 2, if I write:
value entered: " do uglas de oliveira júnior"
should be: "Douglas de Oliveira Júnior"
shouldn't: "douglas de Oliveira Júnior". //value shown with current code
function contains(str, search){
if(str.indexOf(search) >= 0){
return true;
} else {
return false;
}
}
$.fn.capitalize = function(str) {
$.each(this, function() {
var split = this.value.split(' ');
for (var i = 0, len = split.length; i < len; i++) {
var verify = (split[len - 1] == "D" || split[len - 1] == "d") && (str == "e" || str == "E") || (str == "o" || str == "O");
if (verify == false) {
if ( contains(split[i], 'de') == false && contains(split[i], 'do') == false) {
split[i] = split[i].charAt(0).toUpperCase() + split[i].slice(1);
}
}
}
this.value = split.join(' ');
});
return this;
};
$(".capitalize").keypress(function(e) {
var str = String.fromCharCode(e.which);
$(this).capitalize(str);
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<label>Nome: </label>
<input type="text" id="nome" name="nome" class="form-control input-sm capitalize"> This solution also fixes connectives in uppercase, such as carlos DE silva .
Try it with the snippet below :)
var connectives = {
das: true,
da: true,
dos: true,
do: true,
de: true,
e: true
};
function capitalize(str) {
return str
.split(" ")
.map(function(word) {
return !connectives[word.toLowerCase()]
? word.charAt(0).toUpperCase() + word.slice(1).toLowerCase()
: word.toLowerCase();
})
.join(" ");
};
$(".capitalize").keyup(function() {
var cursorStart = this.selectionStart;
var cursorEnd = this.selectionEnd;
var capitalizedString = capitalize($(this).val());
$(this).val(capitalizedString);
this.setSelectionRange(cursorStart, cursorEnd);
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<label>Nome: </label>
<input type="text" id="nome" name="nome" class="form-control input-sm capitalize">You could use a format function that capitalizes all words except those provided in a whitelist. Then format the input value whenever the user presses a key (doesn't work well if the user moves the input cursor around though):
function format(string, noCapList=[]) {
const words = string.toLowerCase().split(' ');
return words.map((word) => {
if(!word.length || noCapList.includes(word)) {
return word;
} else {
return word[0].toUpperCase() + word.slice(1);
}
}).join(' ');
}
const input = document.querySelector('input');
input.addEventListener('keyup', () => {
input.value = format(input.value, ["das", "da", "dos", "do", "de", "e"]);
});<input/> SimpleJ's answer is right, but to clarify your original approach: the "problem" is in the contains function - it actually does what it should according to it's name and returns true if the str contains search , so contains('douglas', 'do') === true ; you already have the string split into separate words so just use split[i] !== "de" && split[i] !== "do" instead of the contains calls.