在做警报时,第一个元素的索引,即紫色正在显示-1.但是这对于获得正确的结果是意外的.因此我无法得到任何人帮助我的预期结果,以便我可以进一步编码.实际上m新的JavaScript,所以我面临这样的问题.希望你能尽快回答.
var colors = ["voilet", "indigo", "blue", "green", "yellow", "orange", "red"];
var target;
var target_index;
var guess_input;
var finished = false;
function do_game() {
var random_number = Math.random() * 7;
var random_number_integer = Math.floor(random_number);
var target_index = random_number_integer;
target = colors[target_index];
alert(target);
while (!finished) {
var guess_input = prompt("I am thinking of a color " +
"violet,indigo,blue,green,yellow,orange,red" +
"What is the color?");
alert(colors.indexOf(guess_input));
finished = check_guess();
}
}
function check_guess() {
if (colors.indexof(guess_input) < 0) {
alert('not present');
return false; …javascript ×1