chmod_generator.js

来自「使用PHP+MySQL编写的一个图片上传共享系统.」· JavaScript 代码 · 共 69 行

var admin_chmod, group_chmod, user_chmod;

function reset_chmod_value(){
	admin_chmod=0;
	group_chmod=0;
	user_chmod=0;
}

function reset_chmod(){
	reset_chmod_value();
	
	document.all.chmod_output.value="744";
	
	document.all.read_admin.checked = true;
	document.all.write_admin.checked = true;
	document.all.exc_admin.checked = true;
	
	document.all.read_coadmin.checked = true;
	document.all.write_coadmin.checked = false;
	document.all.exc_coadmin.checked = false;
	
	document.all.read_user.checked = true;
	document.all.write_user.checked = false;
	document.all.exc_user.checked = false;
}

function generateChmod(){
	reset_chmod_value();
	
	if(document.all.read_admin.checked){ admin_chmod+=4}
	if(document.all.write_admin.checked){ admin_chmod+=2}
	if(document.all.exc_admin.checked){ admin_chmod+=1}
	
	if(document.all.read_coadmin.checked){ group_chmod+=4}
	if(document.all.write_coadmin.checked){ group_chmod+=2}
	if(document.all.exc_coadmin.checked){ group_chmod+=1}
	
	if(document.all.read_user.checked){ user_chmod+=4}
	if(document.all.write_user.checked){ user_chmod+=2}
	if(document.all.exc_user.checked){ user_chmod+=1}	

	document.all.chmod_output.value = admin_chmod + '' + group_chmod + '' + user_chmod;
}

function use_chmod(){
	document.all.chmod.value = document.all.chmod_output.value;
}

function check_chmod(){
	if(!document.all.chmod.value){
		alert('Please Enter A CHMOD value');
		document.all.chmod.focus()
		return false;
	} else if (document.all.chmod.value.length!=3){
		alert('A CHMOD value must exactly 3 characters');
		document.all.chmod.focus()
		return false;
	} else if (document.all.chmod.value<0){
		alert('Please enter a CHMOD value above 000');
		document.all.chmod.focus()		
		return false;
	} else if (document.all.chmod.value>777){
		alert('Please enter A CHMOD value bellow 777');
		document.all.chmod.focus()		
		return false;
	} else {
		return true;
	}
}