How To Remove Character For String Javascript?

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 Remove Character From String Javascript JavaScript is a scripting or programming language that ensures you to implement complex things on web pages every time a web page does more than just sit there as well as show static information for you to look at displaying timely content updates, interactive maps, animated 2D/3D graphics, scrolling video jukeboxes, etc. You may bet that JavaScript is probably involved.

JavaScript is a scripting language that allows you to create dynamically updating content, control multimedia, animate images as well as pretty much everything else. (Okay, not everything, but it is wonderful what you can achieve with a few lines of JavaScript code.)

JavaScript was primary known as Live Script, but Netscape changed its name to JavaScript, possibly because of the excitement being generated by Java. JavaScript made its foremost appearance in Netscape 2.0 in 1995 with the name Live Script. The general-purpose core of the language has been embedded in Netscape, Internet Explorer as well as other web browsers.

This is a good thing, as a very common utilization of JavaScript is to dynamically modify HTML as well as CSS to update a user interface, via the Document Object Model API (as mentioned above). If the JavaScript loaded as well as tried to run before the HTML and CSS were there to affect, then errors would occur.

Client-side JavaScript is the most general form of the language. The script should be included in or referenced by an HTML document for the code to be interpreted via the browser. It means that a web page require not be a static HTML, but can include programs that interact with the user, control the browser as well as dynamically make HTML content. Here we are discussing how to Remove Character From String Javascript.

Remove Character From String Javascript

Show of hands if you may off of the top of your head remove/trim a character from the start or end of a string. If your hand remained down, don’t feel too bad. There are several string manipulation methods in Javascript, it may be confusing.

We have; substr, substring as well as splice (just off the top of my head). Not many people can tell you the differences between the three without Googling.

You probably previously know this, but some people might not, we are going to be removing characters from the beginning as well as end of strings. Riveting stuff, right?

The only two methods you require to know are substr and slice the rest, not so much. Although, always make sure you test any code that you just search on a random blog like this.

Remove the last character

To eliminate one character off of the end of a string, we can use the String.slice method. The amazing thing about slice is it accepts negative numbers, so we don’t require calculating the length like several other solutions seem to utilize for whatever reason. You don’t require to calculate the string length to remove a character and or characters off of the end.

var myString = ‘thisIsMyString!’;

var sillyString = myString.slice(0, -1);

Remove the first character

Want to remove the first character from a string? Just bump the number up if you want to eliminate more than one character from the starting of the string.

var myString = ‘!thisIsMyString’;

var sillyString = myString.substr(1);

If you wanted to remove say five characters from the start, you’d just write substr(5) as well as you would be left with IsMyString utilizing the above example.

Remove the first character and last character

What if you want to remove a character from the beginning of a string as well as from the end at the similar time? Because of the way string methods work, they are chainable.

var myString = ‘!thisIsMyString!’;

var sillyString = myString.substr(1).slice(0, -1);

JavaScript String replace() Method

The replace() method searches a string for a specified value, or a regular expression as well as returns a new string where the specified values are replaced.

Note: If you are replacing a value (and not a regular expression), only the primary instance of the value will be replaced. To replace entire occurrences of a specified value, use the global (g) modifier (see “More Examples” below).

This method does not modify the original string.

Syntax

string.replace(searchvalue, newvalue)

Parameter Values

Searchvalue

Required. The value, or regular expression, that will be replaced by the new value

newvalue

Required. The value to replace the search value with

Return Value:

A new String, where the specified value(s) has been replaced by the new value

Example

Perform a global replacement:

var str = “Mr Blue has a blue house and a blue car”;

var res = str.replace(/blue/g, “red”);

Perform a global, case-insensitive replacement:

var str = “Mr Blue has a blue house and a blue car”;

var res = str.replace(/blue/gi, “red”);

Using a function to return the replacement text:

var str = “Mr Blue has a blue house and a blue car”;

var res = str.replace(/blue|house|car/gi, function (x) {

   return x.toUpperCase();

});

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