Category Archives: String

Find Number of Characters in string No ratings yet.

We can find the number of characters in a string using the length property of JQuery as follows:


$(document).ready(function(){
var myStr = " Paragraph of text with multiple white spaces before and after. ";
myStr.length; // Returns 81 (Length of String Including White-spaces)
$.trim(myStr).length; // Returns 68 (Length of String Without White-spaces)
myStr.replace(/ /g,'').length; // Returns 53 (Length of String After Removing Beginning & Trailing White-spaces)
});

$(document).ready(function(){

var myStr = " Paragraph of text with multiple white spaces before and after. ";

myStr.length; // Returns 81 (Length of String Including White-spaces)

$.trim(myStr).length; // Returns 68 (Length of String Without White-spaces)

myStr.replace(/ /g,'').length; // Returns 53 (Length of String After Removing Beginning & Trailing White-spaces)

});

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Trim string using javascript No ratings yet.

You can do this using various techniques. Some of them are as follows: Method 1: Using Plain Javascript: You can do it using the simple simple Javascript expression as follows:


function trimString(str, maxLen) {
if (str.length <= maxLen) {
return str;
}
var trimmed = str.substr(0, maxLen);
return trimmed.substr(0, trimmed.lastIndexOf(' ')) + '…';
}

// Let's test it

sentenceOne = "too short";
sentencetwo = "more than the max length";

console.log(trimString(sentenceOne, 15));
console.log(trimString(sentencetwo, 15));

function trimString(str, maxLen) {

if (str.length <= maxLen) {

return str;

}

var trimmed = str.substr(0, maxLen);

return trimmed.substr(0, trimmed.lastIndexOf(' ')) + '…';

}

// Let's test it

sentenceOne = "too short";

sentencetwo = "more than the max length";

console.log(trimString(sentenceOne, 15));

console.log(trimString(sentencetwo, 15));

Output:


too short
more than the…

too short

more than the…

Method two: Using trim() function of Jquery: In order to trim a string, firstly you can use the $.trim() function of Jquery to make the input string… Read More »

Truncate string to nearest white space using Javascript No ratings yet.

Method One: Set the length. So that after the 10th character, if any space appears the string will get truncated.


var setLength=10;

function truncateString(string, limit, breakChar, rightPad) {
   if (string.length <= limit) return string;

   var substr = string.substr(0, limit);
   if ((breakPoint = substr.lastIndexOf(breakChar)) >= 0) 
      {
       if (breakPoint < string.length -1) {
           return string.substr(0, breakPoint) + rightPad;
          }
      }
}

var text = 'Break this string once the character count reaches to specified length in setLength variable.';

console.log(truncateString(text, setLength, ' ', '...'));

var setLength=10;

function truncateString(string, limit, breakChar, rightPad) {

if (string.length <= limit) return string;

var substr = string.substr(0, limit);

if ((breakPoint = substr.lastIndexOf(breakChar)) >= 0)

{

if (breakPoint < string.length -1) {

return string.substr(0, breakPoint) + rightPad;

}

var text = 'Break this string once the character count reaches to specified length in setLength variable.';

console.log(truncateString(text, setLength, ' ', '...'));

Output:


Break...

Break...

Method two:


var yourString = "Break this string once the character count reaches to specified length in setLength variable."; //replace with your string.
var maxLength = 6 // maximum number of characters to extract

//trim the string to the maximum length
var trimmedString = yourString.substr(0, maxLength);

//re-trim if we are in the middle of a word
trimmedString = trimmedString.substr(0, Math.min(trimmedString.length, trimmedString.lastIndexOf(" ")))

var yourString = "Break this string once the character count reaches to specified length in setLength variable."; //replace with your string.

var maxLength = 6 // maximum number of characters to extract

//trim the string to the maximum length

var trimmedString = yourString.substr(0, maxLength);

//re-trim if we are in the middle of a word

trimmedString = trimmedString.substr(0, Math.min(trimmedString.length, trimmedString.lastIndexOf(" ")))

Output:


Break

Break

Method three: Using regular expresion


var string = "Javascript regular expresion to shorten string without cutting words";

document.write("1: " + string.replace(/^(.{1}[^\s]*).*/, "$1") + "\n");
document.write("2: " + string.replace(/^(.{2}[^\s]*).*/, "$1") + "\n");
document.write("5: " + string.replace(/^(.{5}[^\s]*).*/, "$1") + "\n");
document.write("11: " + string.replace(/^(.{11}[^\s]*).*/, "$1") + "\n");
document.write("20: " + string.replace(/^(.{20}[^\s]*).*/, "$1") + "\n");
document.write("100: " + string.replace(/^(.{100}[^\s]*).*/, "$1") + "\n");

var string = "Javascript regular expresion to shorten string without cutting words";

document.write("1: " + string.replace(/^(.{1}[^\s]*).*/, "$1") + "\n");

document.write("2: " + string.replace(/^(.{2}[^\s]*).*/, "$1") + "\n");

document.write("5: " + string.replace(/^(.{5}[^\s]*).*/, "$1") + "\n");

document.write("11: " + string.replace(/^(.{11}[^\s]*).*/, "$1") + "\n");

document.write("20: " + string.replace(/^(.{20}[^\s]*).*/, "$1") + "\n");

document.write("100: " + string.replace(/^(.{100}[^\s]*).*/, "$1") + "\n");

Output:


1: Javascript 
2: Javascript 
5: Javascript 
11: Javascript regular 
20: Javascript regular expresion 
100: Javascript regular expresion to shorten string without cutting words

1: Javascript

2: Javascript

5: Javascript

11: Javascript regular

20: Javascript regular expresion

100: Javascript regular expresion to shorten string without cutting words

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