Basic methods for string concatenation in JavaScript _ basic knowledge

This article mainly introduces the basic method of string concatenation in JavaScript, which is the basic knowledge in JS learning. it is very simple for anyone who needs it, add two strings with one "+ ":

   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 in the case of warnings, confirmation dialog boxes, and so on. if this text is rendered as HTML content, it will be invalid"
"Replace it:

   var htmlString = "First line of string.
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 "+.