CODEWITHSUNDEEP
javascriptregex
GibboK
GibboK

Reputation: 73938

regular expression for finding id

I have the following string of test, I need to replace id="XXX" and widgetid="XXX" with a random number.

var test = '<div id="1566" widgetid="1566"></div><div id="1567" widgetid="1568"></div>';

Could yuou suggest me a regular expression?

Upvotes: 1

Views: 446

Answers (1)

Matteo Tassinari
Matteo Tassinari

Reputation: 18584

You could try something like

/ (?:widget)?id="(\d+)"/ig

like this

var regex = /(?:widget)?id="(\d+)"/g;
var test = '<div id="1566" widgetid="1566"></div><div id="1567" widgetid="1568"></div>';

while((result = regex.exec(test)) != null) {
  console.log(result);
}

to replace with random number, you could do:

function random(min, max) {
  return Math.floor(Math.random() * (max - min)) + min;
}

var regex = /((?:widget)?id)="(\d+)"/g;
var test = '<div id="1566" widgetid="1566"></div><div id="1567" widgetid="1568"></div>';
var new_string = test;

while((result = regex.exec(test)) != null) {
  new_string = new_string.replace(result[0], result[1] + '="' + random(1, 9999) + '"');
}

console.log(new_string);

Upvotes: 2

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