宏示例：电子表格文本输入框参数点击输入框后自动清空值

function main(spreadsheetReport) {
    debugger;
    var paramNames = spreadsheetReport.elem_param.getElementsByClassName("aliasSpan");
    if(paramNames && paramNames.length>0){
        for(var i=0;i<paramNames.length;i++){
            if(paramNames[i].textContent.trim()=="部门"  ) // 参数名称
			{
                debugger
                var input = paramNames[i].parentElement.nextElementSibling.children[0] ;
                if(input&&input.className=="paramTextInput"){
                    input.onclick = function(){
                        debugger;
                        this.value="";
                    }
                }
            }
        }
    }
}