如何使用javascript检查gridview中的复选框 [英] How to check checkboxes in gridview with javascript

问题描述

Howw检查gridview中的复选框

  if （chidgridVal.rows.length >   0 ）{
  //   alert（hii222）;  
  for （i =  0 ; i <  = chidgridVal.rows.length; i ++）{ 
 alert（i +  2 ）; 
 
 document.getElementById（'  ctl00_MainContent_gvParentGrid_ctl02_gvChildGrid_ctl0' +（i +  6 ）。toString（）+ '  _ ui_access'） 。已检查 ==  true ; 
  var  chkUIACCESS = document.getElementById（'  ctl00_MainContent_gvParentGrid_ctl02_gvChildGrid_ctl0' +（i +  2 ）。toString（）+ '  _ ui_access'）。已检查 
 alert（chkUIACCESS）; 
  if （chkUIACCESS ==  true ）{
 alert（  chldchk）; 
} 
  else  {alert（  clhdunchk）; } 
} 
} 

i在代码下面写了一下，这样chkbox就会被chked但没有得到chkd

document.getElementById（'ctl00_MainContent_gvParentGrid_ctl02_gvChildGrid_ctl0'+（i + 6）.toString（）+'_ ui_access'）。checked == true;

解决方案

 document.getElementById（'ctl00_MainContent_gvParentGrid_ctl02_gvChildGrid_ctl0'+（i + 6）.toString（）+'_ ui_access'）。checked == true; 

== operator是一个等于运算符，它返回一个布尔值 - true如果其操作数的值相等，否则为false。



由于您需要选中此处的复选框，因此需要赋值运算符（=）。所以用 document.getElementById（'ctl00_MainContent_gvParentGrid_ctl02_gvChildGrid_ctl0'+（i + 6）.toString（）+'_ui_access'）替换你的代码。检查 = 为真; 它应该工作



有关运算符的更多信息，请阅读MSDN参考： C＃操作员 [ ^ ]

Hoew to check checkboxes in gridview

if (chidgridVal.rows.length > 0) {
                  //                         alert("hii222");
                  for (i = 0; i <= chidgridVal.rows.length; i++) {
                      alert(i + 2);

                      document.getElementById('ctl00_MainContent_gvParentGrid_ctl02_gvChildGrid_ctl0' + (i + 6).toString() + '_ui_access').checked == true;
                      var chkUIACCESS = document.getElementById('ctl00_MainContent_gvParentGrid_ctl02_gvChildGrid_ctl0' + (i + 2).toString() + '_ui_access').checked
                      alert(chkUIACCESS);
                      if (chkUIACCESS == true) {
                          alert("chldchk");
                      }
                      else { alert("clhdunchk"); }
                  }
              }

i havewritten below code so that chkboxes will get chked but not getting chkd
document.getElementById('ctl00_MainContent_gvParentGrid_ctl02_gvChildGrid_ctl0' + (i + 6).toString() + '_ui_access').checked == true;

解决方案

document.getElementById('ctl00_MainContent_gvParentGrid_ctl02_gvChildGrid_ctl0' + (i + 6).toString() + '_ui_access').checked == true; 

== operator is an equality operator which returns a boolean value - true if the values of its operands are equal, false otherwise.

Since you need to check the checkbox here, you need an assignment operator (=). So replace your code with document.getElementById('ctl00_MainContent_gvParentGrid_ctl02_gvChildGrid_ctl0' + (i + 6).toString() + '_ui_access').checked = true; and it should work

For more about the operators, read the MSDN reference: C# Operators[^]

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