js string内存泄露

var globalStr = "This is a global string";

(function() {
    var localVar = "This is a local string";
    // 使用localVar
    localVar = null; // 手动解除引用
})();

function outer() {
    var outerStr = "Outer string";
    return function inner() {
        console.log(outerStr);
    };
}
var innerFunc = outer();

function outer() {
    var outerStr = "Outer string";
    return function inner() {
        console.log(outerStr);
        outerStr = null; // 解除引用
    };
}
var innerFunc = outer();
innerFunc();

setInterval(function() {
    var intervalStr = "Interval string";
    console.log(intervalStr);
}, 1000);

var intervalId = setInterval(function() {
    var intervalStr = "Interval string";
    console.log(intervalStr);
}, 1000);

// 在适当的时候清除定时器
clearInterval(intervalId);

var element = document.getElementById('myElement');
var elementStr = element.innerHTML;
element.parentNode.removeChild(element); // 移除DOM元素

var element = document.getElementById('myElement');
var elementStr = element.innerHTML;
element.parentNode.removeChild(element);
element = null; // 解除引用