<!doctype html>class= "Checklist"value=<?phpEcho111;? >>ball<br> <input type= "checkbox" Name= "like[]"class= "Checklist" value=2>study<br> <input type= "checkbox"name= "like[]"class= "Checklist" Value=3>game<br> <input type= "checkbox" Name= "like[]"class= "Checkall" value=4> Select All/all do not choose</form></body><script>$(". Checkall"). Click (function() { varFlag1 = $ (". Checklist"). attr ("checked") = = "Checked"? 1:2; if(Flag1 = = 1) {window. location.Reload (); } //Flag for <input type= "checkbox" Name= "like[]" class= "Checkall" value=4> Select all/all optional flag//It is all flag = 2; it's all flag = 1;< /c3> varFlag = $ (this). attr ("checked") = = "Checked"? 1:2; if(flag = = 2) {//Select All$ (This). attr ("Checked", "checked"); $(". Checklist"). attr ("Checked", "checked"); } Else{//Otherwise, it's all not selected$ (this). Removeattr ("Checked"); $(". Checklist"). Removeattr ("checked")); }});</script>jquery for Select all/All