javascript - 如何通过 is() 方法使用多个变量(选择器)

Question

var container   = $(".container"),
    background  = $(".background");

// ...

// Inside an each() method – check if is container OR background
if (this.is(container, background)) { // Not working
    // do something
}

// I know I could do it like this ...
if (this.is(container) || this.is(background)) {
    // do something
}

// ... but I want it shorter

是否可以使用 is() 将多个选择器作为变量进行检查？

Answer 1

您可以使用此选择器

this.is('.container, .background')

所以基本上， 1)

if (this.is('.container, .background')) {
    // do something
}

2)

var elements = ('.container, .background');
if (this.is(elements))  {
}

3)

if (this.is([container[0], background[0]])) {
    // do something
}

4)

if (this.is(container.add(background))) {
    // do something
}

5)

var temp = container.add(background);
if (this.is(temp)) {
    // do something
}