使用javascript从web sql中删除结果集中的行
作者:互联网
我明白web sql的结果集不是一个数组,更像是一个对象?我正在循环一个结果集并加快速度我想在找到它后删除一行.我试过“删除”和“拼接”,前者什么也没做,后者抛出错误.这是我要做的一件事,请注意第18行的删除:
function selectFromReverse(reverseRay,suggRay){
var reverseString = reverseRay.toString();
db.transaction(function (tx) {
tx.executeSql('SELECT votecount, comboid FROM counterCombos WHERE comboid IN ('+reverseString+') AND votecount>0', [], function(tx, results){
processSelectFromReverse(results,suggRay);
});
}, function(){onError});
}
function processSelectFromReverse(results,suggRay){
var i = suggRay.length;
while(i--){
var j = results.rows.length;
while(j--){
console.log('searching');
var found = 0;
if(suggRay[i].reverse == results.rows.item(j).comboid){
delete results.rows.item(j);
console.log('found');
found++;
break;
}
}
if(found == 0){
console.log('lost');
}
}
}
解决方法:
实际上,您使用DELETE sql命令从数据库中删除记录.例如:
tx.executeSql('DELETE FROM counterCombos WHERE comboid = ?', [comboid], success, error);
processSelectFromReverse可以修改为包含tx作为输入
processSelectFromReverse(results,suggRay,tx)
标签:javascript,html5,web-sql 来源: https://codeday.me/bug/20190613/1231656.html