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slava vissoki
Courses Plus Student 1,709 Pointssearch===null , is not solving the error by the console, why?
while(true) { search = prompt('please type your name'); if(search.toLowerCase() === null || search === 'quit' ){ break; }
still showing: cannot read property tollowercase of null
3 Answers
Cody Te Awa
8,820 PointsHi Slava, Your problem here is that you are trying to test of the variable 'search' is null however in the same condition you are trying to convert the value inside the variable to lowercase
if (search.toLowerCase() === null)
The problem here is that if the value is equal to null then there is no such method you can call on a null value. So to solve your problem you more or less just want to move the method to the other condition in your if statement. Like this:
while(true) {
search = prompt('please type your name');
if(search === null || search.toLowerCase() === 'quit' ) {
break;
}
}
Keep in mind that if you type nothing in the prompt box and type enter it won't exit because null and an empty string are two different things! Keep up the great work though Slava and happy coding :)
slava vissoki
Courses Plus Student 1,709 Pointsthank you for the answer, but i have changed the order of the "tolowercase()" method as you mentioned and it is still showing me the same error, why?
while(true) { search = prompt('please type your name'); if(search.toLowerCase() === 'quit' || search === null ){ break; }
Cody Te Awa
8,820 PointsHi Slava, it looks great now the only thing you want to do is swap the ordering of the condition to this:
if(search === null || search.toLowerCase() === 'quit' )
The reason being that is because if the value of search is null it is still trying to convert it to lower case before it checks it is null. But in the way shown above it checks if it is null before continuing on to check if the value is quit :) Note: It also appears as though you are missing a closing brace of the while loop in the code you supplied. Happy coding Slava! :)
slava vissoki
Courses Plus Student 1,709 Pointsyes it solved the problem , big thank you!