从所有行中获取最大文本长度

时间:2015-09-16 10:35:37

标签: javascript jointjs

如何获取所有行中所有文本的长度。我有变量范围的问题。我只得到最后一行的文本长度。

代码:

pointerclick: function (evt, x, y) {
    var className = evt.target.parentNode.getAttribute('class');

    if (className === 'element-tool-remove')
    {
        this.model.remove();
        console.log("element removed");

        var embeddedCells = parent1.getEmbeddedCells();

        var t = new Array();      
        var maxTextLength;
        for(var d = 0; d < embeddedCells.length; d++)
        {
            t[d] = embeddedCells[d].attributes.attrs.text.text.length;
            var maxTextLength = Math.max(t[d]);
            //console.log("max text length is: " + maxTextLength);
        }
        console.log("max text length is: " + maxTextLength); // printing only last element's text length but not the max value out of all
    }
    joint.dia.CellView.prototype.pointerclick.apply(this, arguments);
}

如何从所有行中获取最大值?

1 个答案:

答案 0 :(得分:2)

尝试:

pointerclick: function (evt, x, y) {
    var className = evt.target.parentNode.getAttribute('class');

    if (className === 'element-tool-remove')
    {
        this.model.remove();
        console.log("element removed");

        var embeddedCells = parent1.getEmbeddedCells();

        var t = new Array();      
        var maxTextLength = 0;
        for(var d = 0; d < embeddedCells.length; d++)
        {
            t[d] = embeddedCells[d].attributes.attrs.text.text.length;
            maxTextLength = Math.max(t[d], maxTextLength);
            //console.log("max text length is: " + maxTextLength);
        }
        console.log("max text length is: " + maxTextLength); // printing only last element's text length but not the max value out of all
    }
    joint.dia.CellView.prototype.pointerclick.apply(this, arguments);
}

我已将0指定为maxTextLength变量的默认值,而在循环中,如果新值较大,则替换maxTextLength的值。我没有办法测试该代码,但它应该可以工作。