bootstrap.js第1109行

Modal.prototype.backdrop?=?function?(callback)?{
??var?that?=?this
??var?animate?=?this.$element.hasClass('fade')???'fade'?:?''

??if?(this.isShown?&&?this.options.backdrop)?{
????var?doAnimate?=?$.support.transition?&&?animate

????this.$backdrop?=?$(document.createElement('div'))
??????.addClass('modal-backdrop?'?+?animate)
??????.appendTo(this.$body)

????this.$element.on('click.dismiss.bs.modal',?$.proxy(function?(e)?{
??????if?(this.ignoreBackdropClick)?{
????????this.ignoreBackdropClick?=?false
????????return
??????}
??????if?(e.target?!==?e.currentTarget)?return
??????this.options.backdrop?==?'static'
??????????this.$element[0].focus()
????????:?this.hide()
????},?this))

寫在模態彈出框點擊按鈕上