javascript - disable preselected checkbox -

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i have these lines of code select checkbox based on preselected flag

if (objx.preselected) {     string js = "if(document.getelementbyid('" + checkboxid + "').checked==false) document.getelementbyid('" + checkboxid + "').click();";     if (!page.clientscript.isstartupscriptregistered(checkboxid))          page.clientscript.registerstartupscript(this.gettype(), checkboxid, js, true); }

after done need disable preselected checkbox. tried below did not work

string js = "if(document.getelementbyid('" + checkboxid + "').checked==false) {document.getelementbyid('" + checkboxid + "').click();document.getelementbyid('" + checkboxid + "').disabled ='disabled';}";

update - disable checkbox problem it's not sent server. new asp.net programming, please suggest.any appreciated.

do need javascript? otherwise like:

if (objx.preselected) {     checkbox.checked = true;     checkbox.enabled = false; }

or

checkbox.checked = objx.preselected; checkbox.enabled = objx.preselected == false;

to make checkbox disabled using javascript can write

document.getelementbyid('id').disabled = 'disabled';

or

document.getelementbyid('id').disabled = true;

no need both .click() , .checked = true;


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