js input按钮置灰的问题
发布网友
发布时间：2022-04-29 10:35
共1个回答
热心网友
时间：2022-06-26 07:29
var txt = document.getElementById('address');
var btn = document.getElementById('saveDeliverInfo');
var reg = /^\s*|\s*$/;
var val = txt.value.replace(reg, '');
if ("" != val) {
btn.disabled = "disabled";
}
txt.onkeyup = function() {
if (val != this.value.replace(reg, '')) {
btn.removeAttribute('disabled');
} else {
btn.disabled = "disabled";
}
}
}
