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App Inventor 2 SQLite 拓展：超流行兼容主流SQL语法的迷你本地数据库引擎...
...页
SQLite 拓展
此SQLite 拓展由中文网开发及维护，基于开源 aix-SQLite 拓展。不支持中文的 库名、表名、字段名，这些名称在任何数据库中都不建议使用中文。
与 TaifunSQLite 功能类似，但TaifunSQLite是收费的，...
How to get the selected radio button’s value?
...ios[i].checked) {
// do whatever you want with the checked radio
alert(radios[i].value);
// only one radio can be logically checked, don't check the rest
break;
}
}
<label for="gender">Gender: </label>
<input type="radio" name="genderS" value="1" checked="c...
Hidden Features of JavaScript? [closed]
...t I'll take just one for you, always use === and !== instead of == and !=
alert('' == '0'); //false
alert(0 == ''); // true
alert(0 =='0'); // true
== is not transitive. If you use === it would give false for
all of these statements as expected.
...
Permutations in JavaScript?
... + this.filter('fastest').map('name'));
})
.run({async: true});
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/platform/1.3.4/platform.min.js"></script>
<script src=...
jQuery callback for multiple ajax calls
...estsCompleted({
numRequest: 3,
singleCallback: function(){
alert( "I'm the callback");
}
});
//usage in request
$.ajax({
url: '/echo/html/',
success: function(data) {
requestCallback.requestComplete(true);
}
});
$.ajax({
url: '/echo/html/',
success: f...
Get the first key name of a javascript object [duplicate]
Let's assume we have the following javascript object:
8 Answers
8
...
Which “href” value should I use for JavaScript links, “#” or “javascript:void(0)”?
...re two methods of building a link that has the sole purpose of running JavaScript code. Which is better, in terms of functionality, page load speed, validation purposes, etc.?
...
数据存储组件 · App Inventor 2 中文网
...屏应用的不同屏幕之间共享数据。
在使用AI伴侣开发应用时，使用该AI伴侣的所有应用都将共用一个微数据库，而一旦应用打包之后，数据的共享将不复存在。因此在开发过程中，每次创建新项目时，都需留心清空微数据...
Declaring abstract method in TypeScript
... abstract makeSound(input : string) : string;
move(meters) {
alert(this.name + " moved " + meters + "m.");
}
}
class Snake extends Animal {
constructor(name: string) { super(name); }
makeSound(input : string) : string {
return "sssss"+input;
}
move() {
...
php var_dump() vs print_r()
... edited Jun 24 '19 at 10:38
Script47
12.4k44 gold badges3636 silver badges5858 bronze badges
answered Aug 4 '10 at 13:55
...