Function Button

js/mui.button.js:21–36

(element, options)

    };

    var Button = function(element, options) {
        this.element = element;
        this.options = $.extend({}, defaultOptions, options);
        if (!this.options.loadingText) {
            this.options.loadingText = defaultOptions.loadingText;
        }
        if (this.options.loadingIcon === null) {
            this.options.loadingIcon = $.className('spinner');
            if ($.getStyles(this.element, 'color') === 'rgb(255, 255, 255)') {
                this.options.loadingIcon += ' ' + $.className('spinner-white');
            }
        }
        this.isInput = this.element.tagName === 'INPUT';
        this.resetHTML = this.isInput ? this.element.value : this.element.innerHTML;
        this.state = '';
    };
    Button.prototype.loading = function() {
        this.setState(STATE_LOADING);
    };