Check if string inside an array javascript

问题:

If i had an array of days names and i wanted to check for example if sunday - first letter capital or small - in this array what would be the best thing to do ?

回答1:

You may also use Array.indexOf:

var days = ["monday",             "tuesday",             "wednesday",             "thursday",             "friday",             "saturday",             "sunday"];  function isInArray(days, day) {     return days.indexOf(day.toLowerCase()) > -1; }  isInArray(days, "Sunday");  // true isInArray(days, "sunday");  // true isInArray(days, "sUnDaY");  // true isInArray(days, "Anyday");  // false 

Check the browser compatibility in MDN.

回答2:

function is_in_array(s,your_array) {     for (var i = 0; i 

Usage:

var arr = ["hello","ToTo"]; is_in_array("toto",arr) //true is_in_array("todto",arr) //false 

文章来源: Check if string inside an array javascript