javascript - 将标题标签的文本一一取出

Question

我需要做的是当你按“h”键时，将标题标签的文本一一获取。这是我的代码，

var currentHeader;
currentHeader = $(":header").first(); 

$(window).on('keyup', function (e) {
    if (e.which === 72){ //h = 72
        alert(currentHeader.text());
        currentHeader = currentHeader.next(":header");
    } 
});

不幸的是，这段代码没有按预期工作，并且没有错误消息传递:'(

What I need is alert the next header tag text each time I press the 'h' key

Answer 1

var headers = $(":header");
var currentHeader = headers.first(); 

$(window).on('keyup', function (e) {
    if (e.which === 72){ //h = 72
        alert(currentHeader.text());
        // go to the next indexed header on the page, after the current header
        currentHeader = headers.eq( headers.index(currentHeader) + 1 );
    } 
});