js全选

1.jquery中attr和prop的区别 :https://www.cnblogs.com/Showshare/p/different-between-attr-and-prop.html
2.效果如下：

3.页面代码注意：
4.js代码
//全选
function SelectAllCheckBox(obj) {
var trList = KaTeX parse error: Expected 'EOF', got '#' at position 3: ("#̲tbody_PlanItem"…(obj).is(’:checked’)) {
for (var i = 0; i < trList.length; i++) {
var tdArr = trList.eq(i).find(“td”);
var isChecked = tdArr.eq(0).find(“span”).children(“input[type=checkbox]”).prop(“checked”, true);
}
} else {
for (var i = 0; i < trList.length; i++) {
var tdArr = trList.eq(i).find(“td”);
var isChecked = tdArr.eq(0).find(“span”).children(“input[type=checkbox]”).prop(“checked”,false);
}
}
}