如何使用Javascript处理每个字母？

本文翻译自：How can I process each letter of text using Javascript?

I would like to alert each individual letter of a string, but I am unsure how to do this. 我想提醒一个字符串的每个字母，但是我不确定该怎么做。

So, if I have: 所以，如果我有：

var str = 'This is my string';

I would like to be able to separately alert T, h, i, s, etc. This is just the beginning of an idea that I am working on, but I need to know how to process each letter separately. 我希望能够分别警告T，h，i，s等。这仅仅是我正在研究的一个想法的开始，但是我需要知道如何分别处理每个字母。

I want to use jQuery and was thinking I might need to use the split function after testing what the length of the string is. 我想使用jQuery，并考虑在测试字符串的长度后可能需要使用split函数。

Ideas? 有想法吗？

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#1楼

参考：https://stackoom.com/question/8fzm/如何使用Javascript处理每个字母

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#2楼

If you want to animate each character you might need to wrap it in span element; 如果要为每个角色设置动画，则可能需要将其包装在span元素中；

var $demoText = $("#demo-text");
$demoText.html( $demoText.html().replace(/./g, "$&").replace(/\s/g, " "));

I think this is the best way to do it, then process the spans. 我认为这是最好的方法，然后处理跨度。 ( for example with TweenMax) （例如，使用TweenMax）

TweenMax.staggerFromTo( $demoText.find("span"), 0.2, {autoAlpha:0}, {autoAlpha:1}, 0.1 ); TweenMax.staggerFromTo（$ demoText.find（“ span”），0.2，{autoAlpha：0}，{autoAlpha：1}，0.1）;

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#3楼

One possible solution in pure javascript: 纯JavaScript的一种可能的解决方案：

for (var x = 0; x < str.length; x++)
{
    var c = str.charAt(x);
    alert(c);
}

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#4楼

You can access single characters with str.charAt(index) or str[index] . 您可以使用 str.charAt(index)或str[index] 访问单个字符 。 But the latter way is not part of ECMAScript so you better go with the former one. 但是后一种方法不是ECMAScript的一部分，因此您最好选择前一种。

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#5楼

You can try this 你可以试试这个

var arrValues = 'This is my string'.split('');
// Loop over each value in the array.
$.each(arrValues, function (intIndex, objValue) {
    alert(objValue);
})

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#6楼

You can get an array of the individual characters like so 您可以像这样获得单个字符的数组

var test = "test string",
    characters = test.split('');

and then loop using regular Javascript, or else you can iterate over the string's characters using jQuery by 然后使用常规Javascript循环，否则您可以使用jQuery通过以下方式迭代字符串的字符：

var test = "test string";

$(test.split('')).each(function (index,character) {
    alert(character);
});