javascript filter an array of strings, matching case insensitive substring

Question

I have an array of names filtered by a certain string. How can I match all names that include this string, but insensitive of case?

this.employeeDisplayList = this.employeeList.filter(e => e.employeeName.includes(this.searchStr));

Does this answer your question? [javascript includes() case insensitive](https://stackoverflow.com/questions/48145432/javascript-includes-case-insensitive) — xandermonkey, Jul 09 '20 at 19:57

score 1 · Accepted Answer · answered Jul 09 '20 at 20:19

1

this.employeeDisplayList = this.employeeList.filter(e => {
    const emp = e.employeeName.toLowerCase();
    const str = this.searchStr.toLowerCase();
    return emp.includes(str);
});

answered Jul 09 '20 at 20:19

Md. Jahidul Islam

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2
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score 1 · Answer 2 · answered Jul 09 '20 at 20:20

1

You can just apply .toLowerCase() to both the employeeName and the searchString.

let employeeDisplayList = [{employeeName: "Jules 1"}, {employeeName: "jules 2"}, {employeeName: "Max"}];

let searchStr = "Jules";

console.log(employeeDisplayList.filter(e => e.employeeName.toLowerCase().indexOf(searchStr.toLowerCase()) >= 0));

Another way would be to search with a case insensitive regex: string.match(/word/i)

answered Jul 09 '20 at 20:20

alotropico

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3
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Apparently I got here a minute too late XD – alotropico Jul 10 '20 at 17:32

javascript filter an array of strings, matching case insensitive substring

2 Answers2