网页中屏蔽删除键起到后退的作用
$(document).ready(function () {
document.onkeydown = kp;
function kp(e) {
e = window.event || e;
var obj = e.target || e.srcElement; //获取事件源
var k = e.keyCode || e.which;
//获取作为判断条件的事件类型
var vReadOnly = obj.getAttribute('readonly');
var vEnabled = obj.getAttribute('enabled');
if (k == 8 && (vReadOnly || vEnabled)) {
return false;
}
}
});
document.onkeydown = kp;
function kp(e) {
e = window.event || e;
var obj = e.target || e.srcElement; //获取事件源
var k = e.keyCode || e.which;
//获取作为判断条件的事件类型
var vReadOnly = obj.getAttribute('readonly');
var vEnabled = obj.getAttribute('enabled');
if (k == 8 && (vReadOnly || vEnabled)) {
return false;
}
}
});
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