时间：2021-06-01 08:50:22 | 栏目：jquery | 点击：次
jQuery限制文本框输入，包含粘贴。
//限制文本框的输入长度
$(function () {
$(document).on("keypress", ".txt-valid-len", function (e) {
if (e.keyCode == 8) {
return true;
}
else {
var len = $(this).data("maxlength") || 0;
if (len > 0) {
return (this.value.length <= len);
}
}
return true;
});
//粘贴
$(document).on("paste", ".txt-valid-len", function () {
var len = $(this).data("maxlength") || 0;
if (len > 0) {
return ((this.value.length + event.clipboardData.getData('Text').length) <= len);
}
return true;
});
$(document).on("keyup input", ".txt-valid-len", function (e) {
var keyCode = e.keyCode || e.which || e.charCode;
if (keyCode == 46 || keyCode == 8) {
}
else {
var len = $(this).data("maxlength") || 0;
if (len > 0) {
if (this.value.length > len) {
this.value = com.cutStr(this.value, len, "");
}
}
}
});
});