给定是一个带有代表表情符号的代码的输入字段。 我现在想用相应的表情符号替换这段代码。
这个想法是用unicode替换值,但这对我的输入不起作用。只有当我将表情符号本身复制到代码中时,替换才有效。
示例:
给定代码:[e-1f60e]
,
转换:😎
,
应该是:
我的问题:如何将给定代码转换为JavaScript中的表情符号?
$("#tauschen").click(function() {
$('#blub').val(function(index, value) {
return value.replace('[e-1f60e]', '😎'); // Doesn't work
});
});
$("#tauschen2").click(function() {
$('#blub2').val(function(index, value) {
return value.replace('[e-1f60e]', ''); // Works - but how to convert the given string to an emoji?!
});
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<p>
Given are strings in an imout field like these, representing an emoji: <strong>[e-1f60e]</strong> </p>
<p>
Now I want to display them "live" as emojis, instead of only the code: 😎
</p>
<input id="blub" type="text" name="test" value="[e-1f60e]">
<input type="submit" value="Test 1" id="tauschen">
<br>
<input id="blub2" type="text" name="test" value="[e-1f60e]">
<input type="submit" value="Test 2" id="tauschen2">
&#13;
JSFiddle:https://jsfiddle.net/r07qnuoz/1/
答案 0 :(得分:7)
你需要......
number
String.fromCodePoint
function convertEmoji(str) {
return str.replace(/\[e-([0-9a-fA-F]+)\]/g, (match, hex) =>
String.fromCodePoint(Number.parseInt(hex, 16))
);
}
console.log(convertEmoji('[e-1f60e]')); //
&#13;
为了与IE兼容,请使用String.fromCharCode
as detailed here或根据the specification直接转换为16位代理对:
// Convert supplementary plane code point to two surrogate 16-bit code units:
function surrogate(cp) {
return [
((cp - 0x010000 & 0xffc00) >> 10) + 0xd800,
(cp - 0x010000 & 0x3ff) + 0xdc00
];
}
function convertEmoji(str) {
return str.replace(/\[e-([0-9a-fA-F]+)\]/g, function(match, hex) {
return String.fromCharCode.apply(null, surrogate(Number.parseInt(hex, 16)))
});
}
console.log(convertEmoji('[e-1f60e]')); //
&#13;