javascript - How do I select a value from a dropdownlist case insensitive? -

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i trying find "cat" in dropdown values of dropdown ["cat","rat","mat"] result not able find text , dont have id "cat" find id. suggestion?

edit: lowercase() change "cat" cat right?? dropdown has "cat"

try compare values lowercase :

if(myvalue.tolowercase() === ddl[i].tolowercase()) {     //... }

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