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2024-09-27 02:06:13 +08:00
commit 852d94fbb9
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历届学生/吴欣阳/项目开发/练习项目/课程练习/6.16/留言/index.js Normal file
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@@ -0,0 +1,10 @@
var Textarea = document.querySelector("textarea");
var Span = document.querySelector("span");
Textarea.oninput = function() {
var len = Textarea.value.length;
if (len > 50) {
Textarea.value = Textarea.value.substring(0, 50);
} else { Span.innerText = `${Textarea.value.length}/50` }
}