How to toggle the innerHTML of element on click

问题

How do I toggle an element's innerHTML on click with pure JS?

(function(){
    var div = document.getElementById("hook");

    div.addEventListener("click", function(){
        div.innerHTML = "I've been clicked";
    }, false);
})();

http://jsfiddle.net/Z2UBs/1/

回答1:

Simplest way (to show you the idea behind this):

    (function(){
        var div = document.getElementById("hook");

        div.addEventListener("click", function(){

            var state1 = document.getElementById('t1').value;
            var state2 = document.getElementById('t2').value;

            if ( div.innerHTML == state1 ) {
                div.innerHTML = state2;
            }
            else if ( div.innerHTML == state2 ) {
                div.innerHTML = state1;
            }
            // add as many dynamic values as you wish here
            else {
                // to be on the safe side
                div.innerHTML = state1;
            }
        }, false);

    })();

FIDDLE

If you want it to be more efficient then introduce boolean variables for representing the current state.

回答2:

Try this

(function(){
            var div = document.getElementById("hook");
            var curText = div.innerText;
            div.addEventListener("click", function(){
            if(this.innerText == curText){
                 div.innerText = "I've been clicked";
            }
            else{
                    div.innerText = curText;
            }
            }, false);

        })();

Here is jsfiddle

来源：https://stackoverflow.com/questions/20499920/how-to-toggle-the-innerhtml-of-element-on-click