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How can I iterate text from a character to another character using Javascript?

Given a url as following :

https://website.com/demo?name=helloworld&timestamp=1234567890

How can I iterate from the = sign and the & sign, resulting in helloworld in JS?

Thanks in advance. :)

Solution

  • 1) Though you don't need to iterate here. You can use slice here to get a part of a string

    const str = "https://website.com/demo?name=helloworld&timestamp=1234567890";
const start = str.indexOf("=");
const end = str.indexOf("&");

const result = str.slice(start + 1, end);
console.log(result);

    2) If you still want to iterate over from = and upto & then you can do

    const str = "https://website.com/demo?name=helloworld&timestamp=1234567890";
const end = str.indexOf("&");

const resultArr = [];
for (let start = str.indexOf("=") + 1; start < end; ++start) {
  resultArr.push(str[start]);
}

console.log(resultArr.join(""));

    3) You can also use regex here

    (?<==)\w+


    const str = "https://website.com/demo?name=helloworld&timestamp=1234567890";
const match = str.match(/(?<==)\w+/);
console.log(match[0]);