alert,摸态框的重新编写

以前写的摸态框,现在用来覆盖 alert ;

兼容的问题还未测试,后续会进行修改

-(function(window){
    var Modal = function(){},modal
    var version = 1.0;

    Modal.prototype = {
        init:function(str){
            this.createEntity(str);
        },
        createEntity:function(str){
            var bg = document.createElement(‘div‘);
            bg.id = ‘GrewerModal‘
            bg.style.opacity = 0.7
            bg.style.position = ‘fixed‘
            bg.style.top = 0
            bg.style.right = 0
            bg.style.bottom = 0
            bg.style.left = 0;
            bg.style.zIndex = 9998;
            bg.style.backgroundColor = ‘#000000‘;
            document.body.appendChild(bg);
            this.addListen(bg);

            var E = document.createElement(‘div‘);
            E.style.opacity = 1;
            E.style.position = ‘relative‘;
            E.style.boxSizing = ‘boder-box‘;
            E.style.margin = ‘50px auto‘;
            E.style.padding = ‘20px‘;
            E.style.width = ‘600px‘;
            E.style.backgroundColor = ‘#fff‘;
            E.style.zIndex = 9999;
            E.style.borderRadius = ‘4px‘
            bg.appendChild(E);

            var close  = document.createElement(‘button‘);
            close.innerText = ‘x‘;
            close.style.border = ‘none‘
            close.style.overflow = ‘visible‘
            close.style.font = ‘inherit‘
            close.style.color = ‘inherit‘
            close.style.textTransform = ‘none‘;
            close.style.padding = 0;
            close.style.background = 0;
            close.style.display = ‘inline-block‘
            close.style.boxSizing = ‘content-box‘
            close.style.width = ‘20px‘
            close.style.lineHeight = ‘20px‘
            close.style.textAlign = ‘middle‘
            close.style.opacity = ‘0.3‘
            close.style.float = ‘right‘
            close.style.margin = ‘-10px -10px 0 0‘
            close.style.cursor = ‘pointer‘
            E.appendChild(close);
            this.addListen(close);

            var head = document.createElement(‘div‘);
            head.style.margin = ‘-20px -20px 15px -20px‘
            head.style.padding = ‘20px‘
            head.style.borderBottom = ‘1px solid #e5e5e5‘
            head.style.borderRadius = ‘4px 4px 0 0‘
            E.appendChild(head);

            var h = document.createElement(‘h2‘);
            h.innerText = str;
            head.appendChild(h);

            var button = document.createElement(‘button‘);
            button.innerText = ‘确定‘;
            button.style.cursor = ‘pointer‘;
            button.style.backgroundColor = ‘rgb(0, 175, 242)‘;
            button.style.color = ‘#fff‘;
            button.style.borderBottonColor = ‘rgba(0,0,0,.4)‘
            button.style.textShadow = ‘0 -1px 0 rgba(0,0,0,.2)‘;
            button.style.textAlign = ‘center‘
            button.style.margin = ‘auto‘;
            button.style.overflow = ‘visible‘;
            button.style.font = ‘inherit‘;
            button.style.textTransform = ‘none‘
            button.style.display = ‘block‘;
            button.style.boxSizing = ‘border-box‘
            button.style.padding = ‘0 12px‘
            button.style.verticalAlign = ‘middle‘
            button.style.lineHeight = ‘28px‘;
            button.style.minHeight = ‘30px‘;
            button.style.fontSize = ‘1rem‘
            button.style.textDecoration = ‘none‘
            button.style.border = ‘1px solid rgba(0,0,0,.2)‘
            button.style.borderRadius = ‘4px‘
            button.style.backgroundOrigin = ‘border-box‘
            E.appendChild(button);
            this.addListen(button);
        },
        addListen:function(obj){
            obj.addEventListener(‘click‘,function(){
                document.getElementById(‘GrewerModal‘).style.display = ‘none‘;
            })
        },
        show:function(str){
                var obj = document.getElementById(‘GrewerModal‘);
                obj.style.display = ‘block‘;
                obj.getElementsByTagName(‘h2‘)[0].innerText = str;
        },
    }
    window.alert = function(str)
   {
        var str = str || ‘‘
        return typeof modal === ‘object‘ ? modal.show(str):(modal = new Modal,modal.init(str));
   }
})(window)

使用:

alert(‘11‘);

效果: