function input() {
var keywords = document.getElementById("keywords").value;
var keyhref = document.getElementById("keyhref").value;
document.getElementById("txt1").innerHTML = document.getElementById("txt1").innerHTML.replace(/(keywords)/gi,"<a href=keyhref>keywords</a>");
}
就是想替换关键字,给他就加上链接
var keywords = document.getElementById("keywords").value;
var keyhref = document.getElementById("keyhref").value;
var reg = new RegExp(keywords, "ig");
document.getElementById("txt1").innerHTML = document.getElementById("txt1").innerHTML.replace(reg, function (word) {
return "<a href=" + keyhref + ">" + word + "</a>";
});
}
不是很明白你要的效果,不知道这是不是。。
function input() {
var keywords = document.getElementById("keywords").value;
var keyhref = document.getElementById("keyhref").value;
var reg = new RegExp(keywords,'gi');
document.getElementById("txt1").innerHTML = document.getElementById("txt1").innerHTML.replace(reg ,"<a href=keyhref>keywords</a>");
}
这里不对 /(keywords)/gi 这里的 keywords 理解成了字符串,而不是变量
function input() {
var keywords = document.getElementById("keywords").value;
var keyhref = document.getElementById("keyhref").value;
document.getElementById("txt1").innerHTML = document.getElementById("txt1").innerHTML.replace(eval("/"+keywords +"/gi"),"<a href=keyhref>keywords</a>");
}
比如var regExp = eval('/' + keywords + '/gi');