Question

我在数组中有一些字符串值

var anchors = [
        "Can", 
        ", please?"
    ];

我有类似下面示例的字符串

<anchor>0</anchor> you repeat that<anchor>1</anchor>

我想在下面的

中构建结果字符串

Can <drop></drop> <drop></drop> <drop></drop>, please?

I want to replace all the <anchor>0</anchor> to the words in the given array and words into <drop></drop> tag

有人请帮我用javascript字符串操作或正则表达式

来构造生成的字符串

Answer 1

您可以尝试以下内容

var myarray =[ "Can",",please?" ];
var inputstring ="<anchor>0</anchor> you repeat that <anchor>1</anchor>"
var len=inputstring.split(" ").length-1
var inputstring1;
for(var i=0;i<=myarray.length;i++)
{
inputstring1 +=   inputstring.replace("<anchor>"+i+"</anchor>",myarray[i]) 
}

var inputstring2=inputstring
for(var i=0;i<=myarray.length;i++)
{
inputstring2 =   inputstring2.replace("<anchor>"+i+"</anchor>","") 
}
myarrayremovedelemets=inputstring2.split(" ")
myarrayremovedelemets.push.apply(myarrayremovedelemets, myarray);

alert(myarrayremovedelemets);

然后将inputstring1替换为<drop></drop>

Answer 2

您可以在callback function使用以下逻辑：

<强>输出：

Can <drop></drop> <drop></drop> <drop></drop>, please?

<强>代码：

var anchors = [
    "Can", 
    ", please?"
];
var replaceCallback = function(match, g1, g2) { 
if(g1 != null) return anchors[g1];
if(g2 != null) return "<drop></drop>";
return match;
}
var str = "<anchor>0</anchor> you repeat that<anchor>1</anchor>";

str = str.replace(/<anchor>(\d+)<\/anchor>|(\w+)/g, replaceCallback); 

alert(str);

修改：更新了正则表达式：

/<anchor>(\d+)<\/anchor>|((?:(?!<anchor>)\S)+)/g

修改：single：

/<(?:anchor|single)>(\d+)<\/(?:anchor|single)>|((?:(?!<(?:anchor|single)>)\S)+)/g

如何找到空格后面的单词并用标签替换？

2 个答案: