Summary of common methods and techniques for operating tables with jQuery_jquery

//Method 1:
//Select all or not select all. The parameter passed in is event. For example: checkAll(event)
function checkAll(evt){
evt=evt?evt: window.event;
var chall=evt.target?evt.target:evt.srcElement;
var tbl=$("#table1");
var trlist=tbl.find("tr") ;
for(var i=1;i var tr=$(trlist[i]);
var input=tr.find("INPUT[type=' checkbox']");
input.attr("checked",chall.checked);
}
}
//Method 2:
//Select all or none The parameter passed in is this, such as: checkAll(this)
function checkAll(evt){
var tbl=$("#table1");
var trlist=tbl.find("tr");
for(var i=1;i var tr=$(trlist[i]);
var input=tr.find("INPUT[type='checkbox ']");
input.attr("checked",evt.checked);
}
}
//Method 3:
//Select all or none The input parameter is this. For example: checkAll(this)
function checkAll(evt){
$("#table1 tr").find("input[type='checkbox']").each(function( i){
$(this).attr("checked",evt.checked)
});
}
//Method 4:
//Select all or none The parameter passed in is this. For example: checkAll(this)
function checkAll(evt){
$("#table1 tr").find("input[type='checkbox']").attr( "checked",evt.checked);
}