The basic method of String concatenation in JavaScript.

The basic method of String concatenation in JavaScript.

It is very simple. Just use "+" to add two strings ":

   var longString = "One piece " + "plus one more piece."; 

To accumulate multiple strings into one, you can also use the "+ =" OPERATOR:

   var result = "";   result += "My name is Anders"   result += " and my age is 25"; 

To add a line break to a string, use the Escape Character "":

   var confirmString = "You did not enter a response to the last " +    "question.Submit form anyway?";   var confirmValue = confirm(confirmString);

However, this method can only be used when the text is rendered as HTML content, such as a warning or confirmation dialog box. In this case, replace it with "<br>:

   var htmlString = "First line of string.<br>Second line of string.";   document.write(htmlString);

 

The String object also provides the concat () method, which performs the same functions as "+:

   string.concat(value1, value2, ...)

However, the concat () method is obviously not as intuitive and concise as "+.