如何在没有评论的情况下从ACE编辑器中获取价值？

Question

Is it possible to get the value of an ace editor instance without the comments (single & multi row)? The comments are identified by the span class 'ace_comment', but the only function I found to extract the data is getValue().

Easy Example:

console.log("Hello World") //This is a comment.

What I get: Output: 'console.log("Hello World") //This is a comment.'

What I want: Output: 'console.log("Hello World")'

Extended Example (Multi-row + '//' and '/* */' comments):

*/ This is a comment */ console.log("this is not a comment") // comment again

Answer 1

You can use regular expressions to remove comments:

 var string = 'console.log("Hello World") //This is a comment. \\n' + 'hello("foo"); /* This is also a comment. */'; string = string.replace(/\\s*\\/\\/.*\\n/g, '\\n').replace(/\\s*\\/\\*[\\s\\S]*?\\*\\//g, ''); document.body.innerHTML = '<pre>' + string + '</pre>'; 

Answer 2

A simpler solution will be. To just trim the //Comment like this

  var str = 'console.log("HelloWorld")//This is a comment'; str = str.split('//'); //Just to print out document.body.innerHTML = '<pre>You provide > '+ str[0]+'//'+str[1] +'</pre><pre>Output > ' + str[0] + '</pre>'; 

By doing this you're spliting the the entire string by the '//' split returns an array that will have [0] = console.log('HelloWorld'); and the [1] = 'Comment like this'. This is the simplest solution i can think of. jcubic. Is basically doing the same by using a regex. Good look!