替换字符串-如何一次替换每个单词

问题描述

我有一个xml字典，如下所示.

I have an xml dictionary as shown below.

<word definition="The primary income-earner in a household">bread winner</word>
<word definition="One who wins, or gains by success in competition, contest, or gaming">winner</word>

每当我的html中有一个字典中的单词时，该单词将被链接和定义作为标题替换.当链接悬停时，用户应该看到定义.

Whenerver there is a word from dictionary in my html, that word will be replaced with link and definition as title. When link is hovered, user should see the definition.

var allwords = xmlDoc.getElementsByTagName("word");
for (var i=0; i<allwords.length; i++)
    {
            var name = allwords[i].lastChild.nodeValue;
            
            var linked = ''<a href ="#" title="'' +  allwords[i].lastChild.nodeValue + '': '' + allwords[i].getAttribute("definition") + ''">'' + allwords[i].lastChild.nodeValue + ''</a>''; 
    }

这是我的替补

Here is my replacer

function replacer(oldstring, newstring) {
document.body.innerHTML = document.body.innerHTML.replace(oldstring, newstring);
}

但是问题是
一旦面包优胜者更改为链接形式，优胜者也将更改，因为面包优胜者包括优胜者，优胜者更改了两次，并且所有代码混在一起.

我问是否有一种方法，一旦面包优胜者更改了优胜者，就不应再更改了.

在此先感谢！

But problem is
once bread winner changes to linked form, also winner changes since bread winner includes winner, winner changes twice, and all the code mixes up.

I am asking if there is a way, once bread winner changes winner should not change anymore.

Thanks in advance!

推荐答案

<script type="text/javascript">

// here your own array from xml, sorted on length
var allwords = ["bread winner", "winner", "win", "w"];

function processString(line, index)
{
  // search for the first occurence (case insensitive) in the line
  var i = line.search(new RegExp(allwords[index], "i"));

  if (i == -1)
  {
    // Not found
    if (index < allwords.length-1)
    {
      // We have more words to find
      return processString(line, index+1)
    }
    else
    {
      // This part ends here
      return line;
    }
  }
  else
  {
    // Word was found, split line into three parts
    var leftpart = line.substr(0, i);
    var word = line.substr(i, allwords[index].length);
    var rightpart = line.substr(i + allwords[index].length);

    var result = "";

    //continue search with another word (if available)
    //and the part is long enough
    if (index < allwords.length-1)
      if (leftpart.length>allwords[index+1].length)
        result = processString(leftpart, index+1);
      else
        result = leftpart;
    else
      result = leftpart;

    //insert here the description from xml
    //the original word is preserved
    result += word.link("www.yourdomain.com?word=" + word);

    //continue search with the current word if the part is long enough
    if (rightpart.length>allwords[index].length)
      result += processString(rightpart, index);
    else
      result += rightpart;

    //left+word+right
    return result;
  }
}

// test string
var str = "win Every bread Winner in the world! Winner win Every bread winner on earth winner!";

//start processing, just one call
str = processString(str, 0);

//this will show the result
document.write(str + "<br />");

//this will show the html
alert(str);

</script>

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