查找并替换长字符串中的确切单词

Question

Below is my string :

api/Node-1/{Node-1}/Node-1-1/{Node-1-1}

Search Term : Node-1

Replace with : Learning

Expected output :

api/Learning/{Learning}/Node-1-1/{Node-1-1}

Now here the problem is Node-1 is matching with other Node-1-1 also but I want exact word matching and replacement.

I have tried lots of options but none of them is working for me.

  function replaceAll(str, find, replace) { return str.replace(new RegExp(escapeRegExp(find), 'g'), replace); } function escapeRegExp(str) { return str.replace(/([.*+?^=!:${}()|\\[\\]\\/\\\\])/g, "\\\\$1"); } console.log(replaceAll('api/Node-1/{Node-1}/Node-1-1/{Node-1-1}','Node-1','Learning')); var replaceStr = 'Node-1'; console.log( 'api/Node-1/{Node-1}/Node-1-1/{Node-1-1}'.replace(new RegExp("\\\\b"+replaceStr+"\\\\b","gi"),"Learning")); console.log( 'api/Node-1/{Node-1}/Node-1-1/{Node-1-1}'.replace(/\\bNode-1\\b/g,'Learning')); 

Update : This question is not duplicate as my first answer is taken from this reference only which is not working with my input case.

Answer 1

Try this :

 function replaceAll(str, find, replace) { return str.replace(new RegExp(escapeRegExp(find), 'g'), replace); } function escapeRegExp(str) { return str + '(?![-])'; } console.log(replaceAll('api/Node-1/{Node-1}/Node-1-1/{Node-1-1}', 'Node-1', 'Learning')); 

It searches every str occurence not followed by '-' . You can add other characters not to match if you want inside the character set.

Answer 2

try this regex ^(?!.*Node-1\\(?!-1))\\w+.*

You can see it in action here

EDIT

So your code would be :

var str = 'api/Node-1/{Node-1}/Node-1-1/{Node-1-1}';
console.log(str.replace(new RegExp("Node-1\(?!-1)","gi"),"Learning"));

A working JsFiddle

Answer 3

Hope this one fixes your problem:

var a = "api/Node-1/{Node-1}/Node-1-1/{Node-1-1}";

var arr = a.split("/");

for (var i=0; i<arr.length; i++) {

    var word = arr[i].replace(/[^a-zA-Z1-9- ]/g, "");
    if (word=="Node-1"){
        arr[i] = arr[i].replace("Node-1", "Learning");
    }
}

newString = arr.join("/");
console.log(newString);

check fiddle: https://jsfiddle.net/z8v0xt98/

Answer 4

尝试使用全非表达式

console.log('api/Node-1/{Node-1}/Node-1-1/{Node-1-1}'.replace(new RegExp("Node-1[^-]","gi"),"Learning"));