Typically, this is utilized to develop dynamic websites. This language was designed as a look a like of Java but because of its friendly interface, even those who are not skilled in programming can deal with this language.
When it comes to replacing texts, it primarily uses the ".replace" method.
This allows the replacement of texts within strings with the use of regular expressions. Here is a helpful example:
For instance, you have this variable:
Now, if you are going to replace the "replace" with "modify," you can do this:
var bar = foo.replace (/ replace /, 'modify');
The result will look like this:
In the first parameter, you will notice that the replace () is known as a regular expression. If you are going to replace a certain text, you have to make sure that it is bounded using a slash (/) and you should check that you have not enclosed them in quotes.
An example of a wrong method to replace is the following:
foo.replace ('/ replace /,' modify ');
Notice that the reason why it is wrong is because of the quotes. On the other hand, because the replace () considered as a regular expression, you can add other stuffs in it. This includes the ^ at the beginning to match the opening of the string. Another option is to add $ at the last part of the string so that it will match.
Here is an example of this is to match a selection of letters, which is a to e in this case:
var foo = "that that that";
var bar = foo.replace (/ ^ that /, 'this');
Now, what happens here is that this will be the new variable bar in your script:
this that that
You also have another option which is to replace a number of HTML texts that are included in a certain element. Here, you can use jQUery previously the function html () from jQuery when you get and set the HTML.
As an example, you can take a look at this:
To transform the text, you can use this:
$ ("#something") .html ($ ("# something") .html (). replace (/ replace /, 'modify'));