JavaScript implements Heredoc syntax and a large number of string concatenation implementations

Source: Internet
Author: User
Tags php and

There are heredoc ways to define strings in PHP and Python:

Php:

The code is as follows Copy Code
$sql =<<<eod
SELECT *
From pages
where Pagename= ' $PN '
EOD;

Python:

The code is as follows Copy Code
Print "" "
This is a example of a string in the Heredoc syntax.
This text can span multiple lines
"""

JS concatenation of a large number of strings no heredoc style operators are more cumbersome:

Splicing Way One:

The code is as follows Copy Code
var str = "
Here's line one
and line two
Finally, Line three!
";

alert (str);

Splicing mode two:

The code is as follows Copy Code
var __template =
' <tr> ' +
' <td> #salarySN #</td> ' +
' <td> #name #</td> ' +
' <td> #TDR_NAME #</td> ' +
' <td> #TSD_NAME #</td> ' +
' <td> #WORK_STATUS #</td> ' +
' <td> #isleader_display #</td> ' +
' <td> '
+ ' <a href= ' javascript:void ( -1) ' > Set role </a> '
+ ' </td></tr> ';


JS strings need to break the original string style, each row processing, this is a bit unbearable.

Give a solution:

The code is as follows Copy Code
function Aheredoc () {/*
Hello, world!.
I am a JavaScript here document.
Use the ' HereDoc ' function to extract me.
*/}

function HereDoc (func) {
Return func.tostring (). Split (/n/). Slice (1,-1). Join (' n ');
}
Console.log (HereDoc (Aheredoc));


uses func.tostring () to get the string that needs to be processed in batches, using split (/n/). Slice (1,-1) to remove the code defined by the two lines of function, and reassemble it.

refer:http://trentrichardson.com/2010/11/11/javascript-heredoc-like-syntax/

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